CTAN sync 202112210300

62 files changed, 2183 insertions, 1312 deletions

diff --git a/FILES.byname b/FILES.byname
index 53cfbc0cd8..ccb0f61fdc 100644
--- a/FILES.byname
+++ b/FILES.byname
@@ -5107,7 +5107,7 @@
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 1990/10/02 |        812 | dviware/vutex/vaxvms.ins
 1990/10/02 |     127576 | dviware/vutex/vutex.web
-2021/12/19 |     109235 | FILES.last07days
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 2021/07/24 |    1139410 | fonts/aboensis/Aboensis.glyphs
 2021/07/24 |   18907382 | fonts/aboensis/aboensis.pdf
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@@ -156264,10 +156264,10 @@
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 2020/06/11 |        242 | graphics/pgf/contrib/yquant/doc/qasm/test10.qasm
 2020/06/11 |        271 | graphics/pgf/contrib/yquant/doc/qasm/test11.qasm
 2020/06/11 |        275 | graphics/pgf/contrib/yquant/doc/qasm/test12.qasm
@@ -183459,7 +183459,7 @@
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 2013/01/22 |     615461 | install/macros/latex/contrib/tabvar.tds.zip
-2021/12/16 |    6318226 | install/macros/latex/contrib/tcolorbox.tds.zip
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 2009/06/22 |     771373 | install/macros/latex/contrib/tdsfrmath.tds.zip
 2019/09/29 |    5325410 | install/macros/latex/contrib/testidx.tds.zip
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@@ -207795,12 +207795,12 @@
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 2021/11/17 |        795 | macros/latex/contrib/easybook/README.md
-2021/12/18 |     636331 | macros/latex/contrib/easybook.zip
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 2009/06/17 |      78378 | macros/latex/contrib/easy/doc/docbmat.pdf
 2009/06/17 |      99132 | macros/latex/contrib/easy/doc/doceqn.pdf
@@ -214002,16 +214002,16 @@
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 1996/09/26 |       1894 | macros/latex/contrib/koi8/readme
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@@ -224514,75 +224514,75 @@
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 2004/06/23 |      65418 | tds/tds.tex
 2019/05/29 |     304264 | tds.zip
-2021/12/20 |        186 | timestamp
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 2002/08/26 |      61898 | usergrps/dante/antrag.pdf
 2002/08/26 |     118217 | usergrps/dante/antrag.ps
 2021/11/11 |        917 | usergrps/dante/dtk/doc/beispiel.bib
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-2021/12/19 |     630055 | systems/win32/miktex/tm/packages/next/files.csv.lzma
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-2021/12/19 |      62709 | systems/win32/miktex/tm/packages/next/miktex-ttf2pk2-bin-x64-2.9.tar.lzma
 2021/12/19 |      62535 | graphics/mcf2graph/mcf_manual.tex
-2021/12/19 |      62418 | systems/win32/miktex/tm/packages/next/miktex-cweb-bin-x64-2.9.tar.lzma
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@@ -100,7 +368,6 @@
 2021/12/19 |       6056 | fonts/etbb/tfm/ETbb-Bold-osf-sc-ot1.tfm
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@@ -113,57 +380,30 @@
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-2021/12/19 |         48 | systems/texlive/tlnet/tlpkg/texlive.tlpdb.md5
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-2021/12/19 |      48804 | systems/win32/miktex/tm/packages/next/miktex-expat-bin-x64-2.9.tar.lzma
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-2021/12/19 |     484479 | systems/win32/miktex/tm/packages/next/miktex-harfbuzz-bin-2.9.tar.lzma
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-2021/12/19 |      47893 | systems/win32/miktex/tm/packages/next/miktex-mtprint-bin-x64-2.9.tar.lzma
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@@ -176,16 +416,8 @@
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-2021/12/19 |      46134 | systems/win32/miktex/tm/packages/next/miktex-dvicopy-bin-2.9.tar.lzma
-2021/12/19 |     461243 | systems/win32/miktex/tm/packages/next/miktex-doc.tar.lzma
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-2021/12/19 |      45732 | systems/win32/miktex/tm/packages/next/miktex-m-tx-bin-2.9.tar.lzma
-2021/12/19 |      45687 | systems/win32/miktex/tm/packages/next/miktex-dvipng-bin-x64-2.9.tar.lzma
-2021/12/19 |        455 | systems/texlive/tlnet/tlpkg/texlive.tlpdb.sha512.asc
-2021/12/19 |        455 | systems/texlive/tlnet/install-tl.zip.sha512.asc
-2021/12/19 |        455 | systems/texlive/tlnet/install-tl-windows.exe.sha512.asc
-2021/12/19 |        455 | systems/texlive/tlnet/install-tl-unx.tar.gz.sha512.asc
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@@ -195,18 +427,9 @@
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-2021/12/19 |      43895 | systems/win32/miktex/tm/packages/next/miktex-mthelp-bin-x64-2.9.tar.lzma
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-2021/12/19 |      43809 | systems/win32/miktex/tm/packages/next/miktex-gsf2pk-bin-x64-2.9.tar.lzma
-2021/12/19 |      43684 | systems/win32/miktex/tm/packages/next/miktex-zlib-bin-x64-2.9.tar.lzma
-2021/12/19 |      43640 | systems/win32/miktex/tm/packages/next/miktex-expat-bin-2.9.tar.lzma
 2021/12/19 |       4360 | fonts/etbb/tfm/ETbb-BoldItalic-tosf-swash-ot1.tfm
-2021/12/19 |      43276 | systems/win32/miktex/tm/packages/next/miktex-mtprint-bin-2.9.tar.lzma
-2021/12/19 |      42766 | systems/win32/miktex/tm/packages/next/miktex-synctex-bin-2.9.tar.lzma
-2021/12/19 |      41325 | systems/win32/miktex/tm/packages/next/miktex-dvipng-bin-2.9.tar.lzma
-2021/12/19 |      41219 | systems/win32/miktex/tm/packages/next/miktex-patgen-bin-x64.tar.lzma
-2021/12/19 |      41202 | systems/win32/miktex/tm/packages/next/miktex-upmendex-bin-x64.tar.lzma
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@@ -215,19 +438,7 @@
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-2021/12/19 |     402052 | systems/texlive/tlnet/archive/texlive-scripts.doc.r61340.tar.xz
-2021/12/19 |      39745 | systems/win32/miktex/tm/packages/next/miktex-zlib-bin-2.9.tar.lzma
-2021/12/19 |     394270 | systems/win32/miktex/tm/packages/next/miktex-cairo-bin-x64-2.9.tar.lzma
-2021/12/19 |      38541 | systems/win32/miktex/tm/packages/next/miktex-mthelp-bin-2.9.tar.lzma
-2021/12/19 |      38461 | systems/win32/miktex/tm/packages/next/miktex-gsf2pk-bin-2.9.tar.lzma
-2021/12/19 |      37373 | systems/win32/miktex/tm/packages/next/miktex-posix-bin-x64-2.9.tar.lzma
-2021/12/19 |      37151 | systems/win32/miktex/tm/packages/next/miktex-upmendex-bin.tar.lzma
-2021/12/19 |      37091 | systems/win32/miktex/tm/packages/next/miktex-chktex-bin-x64-2.9.tar.lzma
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-2021/12/19 |      36043 | systems/win32/miktex/tm/packages/next/miktex-patgen-bin.tar.lzma
-2021/12/19 |      35263 | systems/win32/miktex/tm/packages/next/miktex-axohelp-bin-x64-2.9.tar.lzma
-2021/12/19 |      35164 | systems/win32/miktex/tm/packages/next/miktex-mspack-bin-x64-2.9.tar.lzma
-2021/12/19 |     351558 | systems/win32/miktex/tm/packages/next/miktex-xetex-bin-x64-2.9.tar.lzma
 2021/12/19 |       3504 | fonts/etbb/enc/etbb_boj3jd.enc
 2021/12/19 |       3497 | fonts/etbb/enc/etbb_7dlbn4.enc
 2021/12/19 |       3496 | fonts/etbb/enc/etbb_hdnox5.enc
@@ -250,7 +461,6 @@
 2021/12/19 |       3417 | fonts/etbb/enc/etbb_atf2m5.enc
 2021/12/19 |       3416 | fonts/etbb/enc/etbb_jejpug.enc
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-2021/12/19 |      34091 | systems/win32/miktex/tm/packages/next/miktex-uriparser-bin-x64-2.9.tar.lzma
 2021/12/19 |       3387 | fonts/etbb/enc/etbb_7vqeic.enc
 2021/12/19 |       3383 | fonts/etbb/enc/etbb_ladhhj.enc
 2021/12/19 |       3376 | fonts/etbb/enc/etbb_7tqudy.enc
@@ -266,17 +476,14 @@
 2021/12/19 |       3361 | fonts/etbb/enc/etbb_gcyiic.enc
 2021/12/19 |       3360 | fonts/etbb/enc/etbb_6b4rhp.enc
 2021/12/19 |       3352 | fonts/etbb/enc/etbb_muumxe.enc
-2021/12/19 |     332374 | systems/win32/miktex/tm/packages/next/miktex-cairo-bin-2.9.tar.lzma
 2021/12/19 |       3320 | fonts/etbb/enc/etbb1_ue3xcj.enc
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 2021/12/19 |       3313 | fonts/etbb/enc/etbb1_n6yk3i.enc
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-2021/12/19 |      32990 | systems/win32/miktex/tm/packages/next/miktex-chktex-bin-2.9.tar.lzma
 2021/12/19 |       3272 | fonts/etbb/enc/etbb_dv2xfw.enc
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-2021/12/19 |     326387 | systems/win32/miktex/tm/packages/next/miktex-dvipdfmx-bin-x64-2.9.tar.lzma
 2021/12/19 |       3261 | fonts/etbb/enc/etbb_ea2dgh.enc
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@@ -289,19 +496,15 @@
 2021/12/19 |       3251 | fonts/etbb/enc/etbb_tif2yn.enc
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-2021/12/19 |      32153 | systems/win32/miktex/tm/packages/next/miktex-makeindex-bin-x64-2.9.tar.lzma
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 2021/12/19 |       3194 | fonts/etbb/enc/etbb_3pnwav.enc
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-2021/12/19 |     318735 | systems/win32/miktex/tm/packages/next/miktex-xetex-bin-2.9.tar.lzma
 2021/12/19 |       3165 | fonts/etbb/enc/etbb_hn62ay.enc
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-2021/12/19 |      31579 | systems/win32/miktex/tm/packages/next/miktex-posix-bin-2.9.tar.lzma
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-2021/12/19 |      31538 | systems/win32/miktex/tm/packages/next/miktex-autosp-bin-x64-2.9.tar.lzma
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@@ -310,8 +513,6 @@
 2021/12/19 |      31506 | fonts/etbb/map/ETbb.map
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-2021/12/19 |      31412 | systems/win32/miktex/tm/packages/next/miktex-mspack-bin-2.9.tar.lzma
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 2021/12/19 |       3106 | fonts/etbb/enc/etbb_cyyszv.enc
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@@ -323,7 +524,6 @@
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-2021/12/19 |      30567 | systems/win32/miktex/tm/packages/next/miktex-lacheck-bin-x64-2.9.tar.lzma
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@@ -341,7 +541,6 @@
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@@ -356,7 +555,6 @@
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-2021/12/19 |     295887 | systems/win32/miktex/tm/packages/next/miktex-freetype2-bin-x64-2.9.tar.lzma
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@@ -378,21 +576,14 @@
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-2021/12/19 |      28895 | systems/win32/miktex/tm/packages/next/miktex-autosp-bin-2.9.tar.lzma
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-2021/12/19 |     285454 | systems/win32/miktex/tm/packages/next/miktex-dvipdfmx-bin-2.9.tar.lzma
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-2021/12/19 |      28385 | systems/win32/miktex/tm/packages/next/miktex-lacheck-bin-2.9.tar.lzma
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-2021/12/19 |     281441 | systems/win32/miktex/tm/packages/next/miktex-console-bin-x64-2.9.tar.lzma
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@@ -403,31 +594,20 @@
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-2021/12/19 |    2798719 | systems/win32/miktex/tm/packages/next/miktex-texworks-bin-x64-2.9.tar.lzma
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-2021/12/19 |   25631426 | systems/texlive/tlnet/install-tl.zip
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@@ -436,11 +616,6 @@
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-2021/12/19 |      25132 | systems/win32/miktex/tm/packages/next/miktex-findtexmf-bin-2.9.tar.lzma
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-2021/12/19 |      25061 | systems/win32/miktex/tm/packages/next/miktex-fribidixetex-bin-x64-2.9.tar.lzma
-2021/12/19 |     244962 | systems/win32/miktex/tm/packages/next/miktex-pmx-bin-x64-2.9.tar.lzma
-2021/12/19 |      24151 | systems/win32/miktex/tm/packages/next/miktex-devnag-bin-x64-2.9.tar.lzma
 2021/12/19 |      24004 | fonts/etbb/tfm/ETbb-Italic-osf-t1.tfm
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@@ -449,7 +624,6 @@
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-2021/12/19 |      23933 | systems/win32/miktex/tm/packages/next/miktex-popt-bin-x64-2.9.tar.lzma
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@@ -477,7 +651,6 @@
 2021/12/19 |      23448 | fonts/etbb/tfm/Etbb1-Italic-dnom-t1.tfm
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-2021/12/19 |    2332548 | systems/texlive/tlnet/tlpkg/texlive.tlpdb.xz
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@@ -490,7 +663,6 @@
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-2021/12/19 |      22177 | systems/win32/miktex/tm/packages/next/miktex-fribidixetex-bin-2.9.tar.lzma
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@@ -507,13 +679,8 @@
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-2021/12/19 |     215851 | systems/win32/miktex/tm/packages/next/miktex-metafont-bin-x64-2.9.tar.lzma
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-2021/12/19 |      21371 | systems/win32/miktex/tm/packages/next/miktex-devnag-bin-2.9.tar.lzma
-2021/12/19 |     213457 | systems/win32/miktex/tm/packages/next/miktex-omegaware-bin-x64-2.9.tar.lzma
-2021/12/19 |     209937 | systems/win32/miktex/tm/packages/next/miktex-pmx-bin-2.9.tar.lzma
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-2021/12/19 |   20872000 | systems/texlive/tlnet/install-tl-windows.exe
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@@ -527,35 +694,27 @@
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-2021/12/19 |     203082 | systems/win32/miktex/tm/packages/next/miktex-pixman-bin-x64-2.9.tar.lzma
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-2021/12/19 |     202238 | systems/win32/miktex/tm/packages/next/miktex-mo-bin-x64-2.9.tar.lzma
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-2021/12/19 |      20190 | systems/win32/miktex/tm/packages/next/miktex-popt-bin-2.9.tar.lzma
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-2021/12/19 |    2012705 | systems/win32/miktex/tm/packages/next/miktex-luatex-bin-x64-2.9.tar.lzma
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-2021/12/19 |     200141 | systems/win32/miktex/tm/packages/next/miktex-pixman-bin-2.9.tar.lzma
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-2021/12/19 |     199836 | systems/win32/miktex/tm/packages/next/miktex-mpfr-bin-2.9.tar.lzma
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-2021/12/19 |     199113 | systems/win32/miktex/tm/packages/next/miktex-omegaware-bin-2.9.tar.lzma
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-2021/12/19 |     197375 | systems/win32/miktex/tm/packages/next/miktex-metafont-bin-2.9.tar.lzma
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@@ -570,7 +729,6 @@
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-2021/12/19 |     196121 | systems/win32/miktex/tm/packages/next/miktex-curl-bin-x64-2.9.tar.lzma
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@@ -678,7 +836,6 @@
 2021/12/19 |       1848 | fonts/etbb/tfm/ETbb-Bold-sup-ly1.tfm
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-2021/12/19 |      18486 | systems/win32/miktex/tm/packages/next/miktex-tex2xindy-bin-x64-2.9.tar.lzma
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@@ -691,7 +848,6 @@
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-2021/12/19 |      18370 | systems/win32/miktex/tm/packages/next/miktex-kpathsea-bin-x64-2.9.tar.lzma
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@@ -709,8 +865,6 @@
 2021/12/19 |       1816 | fonts/etbb/vf/Etbb1-BoldItalic-tosf-t1.vf
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-2021/12/19 |     181559 | systems/win32/miktex/tm/packages/next/miktex-mo-bin-2.9.tar.lzma
-2021/12/19 |     181466 | systems/win32/miktex/tm/packages/next/miktex-mpfr-bin-x64-2.9.tar.lzma
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@@ -730,7 +884,6 @@
 2021/12/19 |       1800 | fonts/etbb/vf/Etbb1-Italic-lf-t1.vf
 2021/12/19 |       1800 | fonts/etbb/tfm/ETbb-Bold-lf-ly1--base.tfm
 2021/12/19 |      17992 | systems/texlive/tlnet/archive/easybook.source.r61341.tar.xz
-2021/12/19 |     179707 | systems/win32/miktex/tm/packages/next/miktex-curl-bin-2.9.tar.lzma
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@@ -808,7 +961,6 @@
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-2021/12/19 |    1732471 | systems/win32/miktex/tm/packages/next/miktex-luatex-bin-2.9.tar.lzma
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@@ -835,7 +987,6 @@
 2021/12/19 |       1724 | fonts/etbb/vf/ETbb-BoldItalic-osf-t1.vf
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-2021/12/19 |     172343 | systems/win32/miktex/tm/packages/next/miktex-tex-bin-x64-2.9.tar.lzma
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 2021/12/19 |       1720 | fonts/etbb/vf/ETbb-Italic-osf-t1.vf
@@ -853,6 +1004,7 @@
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+2021/12/19 |     171031 | support/TeX4ht/source/ChangeLog
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@@ -1421,8 +1454,6 @@
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@@ -2119,58 +2150,3 @@
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diff --git a/graphics/pgf/contrib/xistercian/README.md b/graphics/pgf/contrib/xistercian/README.md
index 42fea466d4..da604d7304 100644
--- a/graphics/pgf/contrib/xistercian/README.md
+++ b/graphics/pgf/contrib/xistercian/README.md
@@ -1,7 +1,7 @@
 -------------------------------------------------------------------------------
 # xistercian -- Cistercian numerals in LaTeX
 
-Version 2021-11-23 v1.1a
+Version 2021-12-20 v1.2
 
 Released under the LaTeX Project Public License v1.3c or later
 See http://www.latex-project.org/lppl.txt
diff --git a/graphics/pgf/contrib/xistercian/xistercian.dtx b/graphics/pgf/contrib/xistercian/xistercian.dtx
index 16382ad2ca..ff9b20b105 100644
--- a/graphics/pgf/contrib/xistercian/xistercian.dtx
+++ b/graphics/pgf/contrib/xistercian/xistercian.dtx
@@ -55,7 +55,7 @@ and the derived files           xistercian.pdf
 \fi
 %
 \IfFileExists{xistercian.sty}{\RequirePackage[debug]{xistercian}}{}
-\ProvidesFile{xistercian.dtx}[2021-11-23 v1.1a Cistercian numerals in LaTeX]
+\ProvidesFile{xistercian.dtx}[2021-12-20 v1.2 Cistercian numerals in LaTeX]
 \PassOptionsToPackage{full}{textcomp}
 \documentclass{l3doc}
 \RequirePackage[fulloldstyle,nott]{kpfonts}
@@ -80,32 +80,38 @@ and the derived files           xistercian.pdf
       \cisterciannum{#1}^^A
     \endgroup
   }
+\pagenumbering{cistercian}
+\ExplSyntaxOn
+\makeatletter
+\AddToHook{env/syntax/begin}{\let\myhfill\hfill}
+\let\myhfill\@empty
 \newcommand*\mydefault[1]
-  {^^A
+  {
     \begingroup
-      \color{darkgray}^^A
+      \color{darkgray}
       \myrestoredefaults
-      \hfill
+      \myhfill
       \texttt
-        {^^A
-          \detokenize\expandafter\expandafter\expandafter
-            {\csname xister@#1\endcsname}^^A
-          \unskip
-        }^^A
+        {
+          \expandafter\ifx\csname xister@#1\endcsname\@empty
+            \normalfont\emph{empty}
+          \else
+            \detokenize\expandafter\expandafter\expandafter
+              {\csname xister@#1\endcsname}
+            \unskip
+          \fi
+        }
     \endgroup
   }
 \newcommand*\mysdefault[1]
-  {^^A
+  {
     \begingroup
-      \color{darkgray}^^A
+      \color{darkgray}
       \myrestoredefaults
-      \hfill
-      \texttt{#1}^^A
+      \myhfill
+      \texttt { \str_if_eq:nnTF {#1} { empty } { \normalfont \emph{#1} } {#1} }
     \endgroup
   }
-\pagenumbering{cistercian}
-\ExplSyntaxOn
-\makeatletter
 \def\myrestoredefaults#1{\def\unexpanded{#1}{\unexpanded\expandafter{#1}}}
 \edef\myrestoredefaults
   {
@@ -117,6 +123,7 @@ and the derived files           xistercian.pdf
     \myrestoredefaults\xister@th
     \myrestoredefaults\xister@tdu
     \myrestoredefaults\xister@tdd
+    \myrestoredefaults\xister@ts
     \myrestoredefaults\xister@font
   }
 \makeatother
@@ -135,11 +142,33 @@ and the derived files           xistercian.pdf
   {\cisterciansetup{sv=.27ex,sdd=.27ex,sh=.12ex,sdu=.12ex,wd=.625em}}
 \AddToHook{mdseries}{\myrestoredefaults}
 \cisterciansetup{redraw+=series}
+\tl_new:N \l__xisterexample_digit_tl
+\newcommand*\showbb[1]
+  {
+    \begingroup
+      \cisterciansetup{#1}\cistercianredraw
+      \fboxrule=.5pt
+      \fboxsep=-.5\fboxrule
+      \leavevmode
+      \rlap
+        {
+          \textcolor{red}
+            {\fbox{\phantom{\cisterciannumE{\l__xisterexample_digit_tl}}}}
+        }
+      \kern.5\fboxrule
+      \cisterciannumE{\l__xisterexample_digit_tl}
+      \kern.5\fboxrule
+    \endgroup
+  }
+\newcommand*\exampledigits{\tl_set:Nn \l__xisterexample_digit_tl}
+\cistercianstyle{.ex}{sv=3pt,sdd=3pt,sh=2pt,sdu=2pt}
+\cistercianstyle{vex}{o=v,bx=,by=,wd=7mm,ht=14mm,.ex}
+\cistercianstyle{hex}{o=h,bx=,by=,ht=7mm,wd=14mm,.ex}
 \ExplSyntaxOff
 \begin{document}
   \title{The \pkg{xistercian} package}
   \author{Jonathan P. Spratte\thanks{\protect\randomize{jspratte@yahoo.de}}}
-  \date{2021-11-23 v1.1a}
+  \date{2021-12-20 v1.2}
   \DocInput{xistercian.dtx}
 \end{document}
 %</driver>^^A=<<
@@ -171,6 +200,13 @@ and the derived files           xistercian.pdf
 % This package also supports that, in which case the numerals are rotated by
 % $90$ degrees counter-clockwise, see figure~\ref{fig:glyphs:h}.
 %
+% Moreover some glyphs have a different shape in some manuscripts. The shapes in
+% figures~\ref{fig:glyphs} and~\ref{fig:glyphs:h} are the most used ones
+% nowadays (most likely because those are the ones Wikipedia shows vector
+% graphics of). This package offers some (not all) alternative forms. Most
+% notably some historic documents have swapped shapes of digits. To not further
+% the confusion this package doesn't support swapping digit shapes.
+%
 % All glyphs have the same bounding box, are drawn using the \pkg{pgf}
 % package, and cached inside \TeX\ box registers. Therefore the performance is
 % quite well, at least well enough to actually consider using these numerals
@@ -219,7 +255,8 @@ and the derived files           xistercian.pdf
 % The package tries to play nice on \pkg{hyperref} if it is loaded, but
 % bookmarks containing material that should've been a Cistercian numeral will
 % have a leading |CISTER| in front of the numeric value to give unique
-% strings compared to |\arabic|.
+% strings compared to |\arabic| (to my knowledge there are no Unicode points for
+% Cistercian numerals).
 %
 % Negative numbers just keep a leading~|-|, and numbers with an absolute number
 % greater than $9999$ are displayed with multiple Cistercian digits. For
@@ -227,6 +264,11 @@ and the derived files           xistercian.pdf
 % that four consecutive digits are zeros they get displayed as that:
 % \cistexnum{10000} is $10000$.
 %
+% Full disclaimer: I'm neither a historian nor have I any authority on the
+% matter. I'm just a bloke who was fascinated by this numeral system and wanted
+% to provide \LaTeX\ support for it. Most of my knowledge about this stems from
+% Wikipedia and similar sources.
+%
 %
 % \subsection{Macros}
 %
@@ -282,15 +324,25 @@ and the derived files           xistercian.pdf
 %
 % \begin{function}{\cistercianstyle}
 %   \begin{syntax}
-%     \cs{cistercianstyle}\marg{name}\marg{key=value,\ldots}
+%     \cs{cistercianstyle}\meta{*}\marg{name}\marg{key=value,\ldots}
 %   \end{syntax}
 %   With this macro you can define a key called \meta{name} that'll set the
 %   options in the \meta{key=value} list if used inside |\cisterciansetup|.
-%   Only new names are allowed.
+%   Only new names are allowed. If your style shouldn't take an argument (so is
+%   fixed) use the normal variant. If your style needs to take an argument use
+%   the variant with \meta{*}.
 % \end{function}
-% For example, the key |horizontal| is equivalently defined to
+% For example, the key |horizontal| is equivalently defined to and can be used
+% as
 % \begin{verbatim}
 % \cistercianstyle{horizontal}{o=h,wd=0.775em,ht=1.13ex}
+% \cisterciansetup{horizontal}
+% \end{verbatim}
+% And if you want to define a style that at the same time changes the stroke
+% widths for vertical and horizontal strokes you could use
+% \begin{verbatim}
+% \cistercianstyle*{sh+v}{sh={#1},sv={#1}}
+% \cisterciansetup{sh+v=.12ex}
 % \end{verbatim}
 %
 %
@@ -303,10 +355,10 @@ and the derived files           xistercian.pdf
 %
 % For the options |width| and |height|, and probably also the strokes, you
 % should use dimensions using |ex| or |em| to get sizes depending on the current
-% font size. For all three of those options the \meta{dimension expression} is
-% evaluated (using the setup specified in |font|) every time the font changed
-% according to the |redraw| option's feature list (by default only when the size
-% changed) since the last time they were drawn.
+% font size. A \meta{dimension expression} is evaluated (using the setup
+% specified in |font|) every time the font changed according to the |redraw|
+% option's feature list (by default only when the size changed) since the last
+% time they were drawn.
 %
 % Initial values if present are printed on the right. A small graphic explaining
 % most of the size related options is shown in figure~\ref{fig:size}.
@@ -392,7 +444,7 @@ and the derived files           xistercian.pdf
 %
 % \begin{function}{bound-y,by}
 %   \begin{syntax}
-%     bound-y = \marg{float} \mysdefault{\normalfont\emph{empty}}
+%     bound-y = \marg{float} \mydefault{by}
 %   \end{syntax}
 %   Specifies the factor the bounding box in $y$-direction is bigger than the
 %   |height|. An empty \meta{float} is considered the same as $1$.
@@ -400,7 +452,7 @@ and the derived files           xistercian.pdf
 %
 % \begin{function}{baseline,bs}
 %   \begin{syntax}
-%     baseline = \marg{float} \mysdefault{\normalfont\emph{empty}}
+%     baseline = \marg{float} \mydefault{bs}
 %   \end{syntax}
 %   Sets the baseline of the symbols in multiples of the negative height. $1$
 %   (or empty) results in the symbol starting on the surrounding baseline,
@@ -437,6 +489,15 @@ and the derived files           xistercian.pdf
 %   right.
 % \end{function}
 %
+% \begin{function}{stroke-s,ss}
+%   \begin{syntax}
+%     stroke-s = \marg{dimension expression} \mydefault{ts}
+%   \end{syntax}
+%   Sets the stroke thickness of the zero stem. If this is set to an empty value
+%   the stroke thickness in vertical mode is that of |stroke-v| and in
+%   horizontal mode that of |stroke-h|.
+% \end{function}
+%
 % \begin{function}{strokes,s}
 %   \begin{syntax}
 %     stroke = \marg{dimension expression}
@@ -454,8 +515,8 @@ and the derived files           xistercian.pdf
 %   right rectangle. The width of that rectangle is determined by |width|, and
 %   the upper border by |height|, and with this option you can set the lower
 %   border as a fraction of the |height|. You can either just give a factor as a
-%   \meta{float}, or just pass in a divisor as an \meta{integer}, or both. An
-%   empty \meta{float} equals $1$.
+%   \meta{float}, or just pass in a divisor as an \meta{integer} (with a leading
+%   slash), or both. An empty \meta{float} equals $1$.
 % \end{function}
 % Consider the following example (result on the right):\\[\bigskipamount]
 % \begin{minipage}[c]{.8\linewidth}
@@ -498,7 +559,7 @@ and the derived files           xistercian.pdf
 %   \begin{syntax}
 %     alternate-5 = \marg{choice} \mysdefault{triangle}
 %   \end{syntax}
-%   There are alternative forms of the digit $5$, while the most often used one
+%   There are alternative forms of the digit $5$. While the most often used one
 %   nowadays seems to be the |triangle| form, this package also supports two
 %   other variants. Those are called |dot| and |dash|. While if you choose
 %   |triangle| you can't give an additional value, if your choice is |dot| or
@@ -507,12 +568,13 @@ and the derived files           xistercian.pdf
 %   value if you changed the value at some point in time).
 %
 %   For |dot| you can also specify the radius as a dimension. The default is
-%   \mbox{\mydefault{five@dot}}.
+%   \mydefault{five@dot}.
 %
 %   For |dash| you can specify the length of the dash in multiples of the used
 %   stroke thickness (which might differ for the horizontal and vertical
 %   symbols), an empty value is considered the same as $1$. The default is
-%   \mbox{\mysdefault{\normalfont\emph{empty}}}.
+%   \mydefault{five@dash}. Please ensure that your readers can't confuse the
+%   results with the shape of $6$.
 %
 %   A comparison of the three alternate forms is shown in
 %   figure~\ref{fig:fives}.
@@ -529,32 +591,79 @@ and the derived files           xistercian.pdf
 %
 % \begin{figure}
 %   \centering
-%   \def\showbb#1{^^A
-%       \begingroup
-%       \cisterciansetup{#1}\cistercianredraw
-%       \fboxrule=.5pt
-%       \fboxsep=-.5\fboxrule
-%       \leavevmode
-%       \rlap{\textcolor{red}{\fbox{\phantom{\cisterciannum{5555}}}}}^^A
-%       \kern.5\fboxrule\cisterciannum{5555}\kern.5\fboxrule^^A
-%       \endgroup
-%     }^^A
-%   \cisterciansetup{bx=1,by=1,wd=1cm,ht=2cm,sv=3pt,sdd=3pt,sh=2pt,sdu=2pt}
-%   \cistercianstyle{hexample}{o=h,ht=1cm,wd=2cm}
-%   \begin{tabular}{*5c}
-%     \texttt{triangle} &
-%     \texttt{dot=2pt}  & \texttt{dot=4pt} &
-%     \texttt{dash=1}   & \texttt{dash=3}  \\
-%     \showbb{5=triangle} &
-%     \showbb{5=dot=2pt}  & \showbb{5=dot=4pt} &
-%     \showbb{5=dash=1}   & \showbb{5=dash=3}  \\
-%     \showbb{5=triangle,hexample} &
-%     \showbb{5=dot=2pt,hexample}  & \showbb{5=dot=4pt,hexample} &
-%     \showbb{5=dash=1,hexample}   & \showbb{5=dash=3,hexample}
-%   \end{tabular}
+%   \exampledigits{5555}%
+%   \begingroup
+%     \cisterciansetup{vex}%
+%     \begin{tabular}{*5c}
+%       \texttt{triangle}        &
+%         \texttt{dot=2pt}       & \texttt{dot=4pt} &
+%         \texttt{dash=1}        & \texttt{dash=3}  \\
+%       \showbb{5=triangle}      &
+%         \showbb{5=dot=2pt}     & \showbb{5=dot=4pt} &
+%         \showbb{5=dash=1}      & \showbb{5=dash=3}  \\
+%       \showbb{5=triangle,hex}  &
+%         \showbb{5=dot=2pt,hex} & \showbb{5=dot=4pt,hex} &
+%         \showbb{5=dash=1, hex} & \showbb{5=dash=3, hex} \\
+%     \end{tabular}
+%   \endgroup
 %   \caption[Alternate forms of the digit $5$]
-%     {Alternate forms of the digit $5$. The tight bounding
-%      boxes using \texttt{bx=1,by=1} are drawn red.\label{fig:fives}}
+%     {Alternate forms of the digit $5$. The length of the \texttt{dash=3}
+%      variant is too long in the normal setup of this document, as the
+%      difference between {\cisterciansetup{5=dash=3,r!}\cisterciannum{5555}}
+%      and \cisterciannum{6666} is hard to notice. The tight bounding boxes
+%      using \texttt{bx=1,by=1} are drawn red.\label{fig:fives}}
+% \end{figure}
+%
+% \begin{function}{alternate-6,6}
+%   \begin{syntax}
+%     \cs{alternate-6} = \marg{choice} \mysdefault{stroke}
+%   \end{syntax}
+%   There are alternative forms of the digit $6$. While today the usual form is
+%   |stroke|, there are also historic documents showing the $6$ as two dots,
+%   which you can achieve using the |dot| choice, and to support squares or
+%   short dashes instead of round dots you can use the |dash| choice.
+%
+%   For |dot| you can also specify the radius as a dimension. The default is
+%   \mydefault{six@dot}. And for |dash| you can also specify the length in
+%   multiples of the used stroke thickness, an empty value is considered the
+%   same as $1$. The default is \mydefault{six@dash}. The |stroke| has always
+%   the full length and doesn't accept an additional specification.
+%
+%   A comparison of the alternate forms is shown in figure~\ref{fig:69}.
+% \end{function}
+%
+% \begin{function}{alternate-9,9}
+%   \begin{syntax}
+%     \cs{alternate-9} = \marg{choice} \mysdefault{rectangle}
+%   \end{syntax}
+%   Another digit having alternative forms is the $9$. For this two
+%   \meta{choice}s are available, |rectangle| and |triangle|. Neither of the two
+%   accept additional specifications.
+%
+%   A comparison of the alternate forms is shown in figure~\ref{fig:69}.
+% \end{function}
+%
+% \begin{figure}
+%   \centering
+%   \exampledigits{6666}%
+%   \cisterciansetup{vex}%
+%   \begin{tabular}{@{}*5c}
+%     \texttt{stroke}       & \texttt{dot=2pt}       & \texttt{dot=4pt}
+%                           & \texttt{dash=1}        & \texttt{dash=2}        \\
+%     \showbb{6=stroke}     & \showbb{6=dot=2pt}     & \showbb{6=dot=4pt}
+%                           & \showbb{6=dash=1}      & \showbb{6=dash=2}      \\
+%     \showbb{6=stroke,hex} & \showbb{6=dot=2pt,hex} & \showbb{6=dot=4pt,hex}
+%                           & \showbb{6=dash=1, hex} & \showbb{6=dash=2, hex} \\
+%   \end{tabular}\hfill
+%   \exampledigits{9999}%
+%   \begin{tabular}{*2c@{}}
+%     \texttt{rectangle}       & \texttt{triangle}       \\
+%     \showbb{9=rectangle}     & \showbb{9=triangle}     \\
+%     \showbb{9=rectangle,hex} & \showbb{9=triangle,hex} \\
+%   \end{tabular}
+%   \caption[Alternate forms of the digits $6$ and $9$]
+%     {Alternate forms of the digits $6$ (left) and $9$ (right). The tight
+%     bounding boxes using \texttt{bx=1,by=1} are drawn red.\label{fig:69}}
 % \end{figure}
 %
 % \begin{function}{font,f}
@@ -651,7 +760,7 @@ and the derived files           xistercian.pdf
 % \gobbledocstriptag
 %<*pkg>
 %    \begin{macrocode}
-\ProvidesPackage{xistercian}[2021-11-23 v1.1a Cistercian numerals in LaTeX]
+\ProvidesPackage{xistercian}[2021-12-20 v1.2 Cistercian numerals in LaTeX]
 \RequirePackage{pgf,expkv-opt}
 %    \end{macrocode}
 %
@@ -665,6 +774,7 @@ and the derived files           xistercian.pdf
 \newcommand*\xister@tv{.18ex}
 \newcommand*\xister@tdu{.1ex}
 \newcommand*\xister@tdd{.18ex}
+\newcommand*\xister@ts{}
 \newcommand*\xister@x{.5em}
 \newcommand*\xister@y{1.55ex}
 \newcommand*\xister@bx{1.2}
@@ -673,11 +783,16 @@ and the derived files           xistercian.pdf
 \newcommand*\xister@font{\normalfont}
 \newcommand*\xister@five@dot{.09ex}
 \newcommand*\xister@five@dash{}
+\newcommand*\xister@six@dot{.09ex}
+\newcommand*\xister@six@dash{}
 \newcommand*\xister@share@div{/6}
 \newcommand*\xister@share@mul{}
 \newif\ifxister@dbg@
 \newif\ifxister@five@triangle@\xister@five@triangle@true
 \newif\ifxister@five@dot@
+\newif\ifxister@six@dot@
+\newif\ifxister@six@stroke@\xister@six@stroke@true
+\newif\ifxister@nine@triangle@
 \newdimen\xister@X
 \newdimen\xister@Y
 \newdimen\xister@XY@share
@@ -685,8 +800,11 @@ and the derived files           xistercian.pdf
 \newdimen\xister@Tv
 \newdimen\xister@Tdu
 \newdimen\xister@Tdd
+\newdimen\xister@Ts
 \newdimen\xister@TMPA
 \newdimen\xister@TMPB
+\newdimen\xister@Five@dot
+\newdimen\xister@Six@dot
 %    \end{macrocode}
 %
 % We also need a bunch of box registers ($37$ of them to be precise). For the
@@ -888,21 +1006,27 @@ and the derived files           xistercian.pdf
   }
 \xister@tmp{wd}{width}{\edef\xister@x{\unexpanded{#1}}\xister@dbg@dim{#1}}
 \xister@tmp{ht}{height}{\edef\xister@y{\unexpanded{#1}}\xister@dbg@dim{#1}}
+\xister@tmp{bx}{bound-x}{\edef\xister@bx{\unexpanded{#1}}\xister@dbg@float{#1}}
+\xister@tmp{by}{bound-y}{\edef\xister@by{\unexpanded{#1}}\xister@dbg@float{#1}}
+\xister@tmp{bs}{baseline}{\edef\xister@bs{\unexpanded{#1}}\xister@dbg@float{#1}}
 \xister@tmp{sv}{stroke-v}{\edef\xister@tv{\unexpanded{#1}}\xister@dbg@dim{#1}}
 \xister@tmp{sh}{stroke-h}{\edef\xister@th{\unexpanded{#1}}\xister@dbg@dim{#1}}
 \xister@tmp{sdu}{stroke-du}
   {\edef\xister@tdu{\unexpanded{#1}}\xister@dbg@dim{#1}}
 \xister@tmp{sdd}{stroke-dd}
   {\edef\xister@tdd{\unexpanded{#1}}\xister@dbg@dim{#1}}
-\xister@tmp{bx}{bound-x}{\edef\xister@bx{\unexpanded{#1}}\xister@dbg@float{#1}}
-\xister@tmp{by}{bound-y}{\edef\xister@by{\unexpanded{#1}}\xister@dbg@float{#1}}
-\xister@tmp{bs}{baseline}{\edef\xister@bs{\unexpanded{#1}}\xister@dbg@float{#1}}
+\xister@tmp{ss}{stroke-s}
+  {%
+    \edef\xister@ts{\unexpanded{#1}}%
+    \unless\ifx\xister@ts\@empty\xister@dbg@dim{#1}\fi
+  }
 \xister@tmp{s}{strokes}
   {%
     \edef\xister@tv{\unexpanded{#1}}%
     \let\xister@th\xister@tv
     \let\xister@tdu\xister@tv
     \let\xister@tdd\xister@tv
+    \let\xister@ts\xister@tv
     \xister@dbg@dim{#1}%
   }
 \xister@tmp{f}{font}{\edef\xister@font{\unexpanded{#1}}}
@@ -960,6 +1084,40 @@ and the derived files           xistercian.pdf
 \ekvlet{xister}{5}\xister@five@set
 \ekvlet{xister}{alternate-5}\xister@five@set
 \let\xister@five@set\xister@undefined
+\protected\long\ekvdef{xister/6}{dot}
+  {%
+    \xister@six@stroke@false
+    \xister@six@dot@true
+    \edef\xister@six@dot{\unexpanded{#1}}%
+    \xister@dbg@dim{#1}%
+  }
+\protected\long\ekvdef{xister/6}{dash}
+  {%
+    \xister@six@stroke@false
+    \xister@six@dot@false
+    \edef\xister@six@dash{\unexpanded{#1}}%
+    \xister@dbg@float{#1}%
+  }
+\protected\ekvdefNoVal{xister/6}{stroke}{\xister@six@stroke@true}
+\protected\ekvdefNoVal{xister/6}{dot}
+  {%
+    \xister@six@stroke@false
+    \xister@six@dot@true
+  }
+\protected\ekvdefNoVal{xister/6}{dash}
+  {%
+    \xister@six@stroke@false
+    \xister@six@dot@false
+  }
+\protected\ekvsetdef\xister@six@set{xister/6}
+\ekvlet{xister}{6}\xister@six@set
+\ekvlet{xister}{alternate-6}\xister@six@set
+\let\xister@six@set\xister@undefined
+\protected\ekvdefNoVal{xister/9}{rectangle}{\xister@nine@triangle@false}
+\protected\ekvdefNoVal{xister/9}{triangle}{\xister@nine@triangle@true}
+\protected\ekvsetdef\xister@nine@set{xister/9}
+\ekvlet{xister}{9}\xister@nine@set
+\ekvlet{xister}{alternate-9}\xister@nine@set
 \protected\ekvdefNoVal{xister}{horizontal}
   {%
     \let\xister@build\xister@build@horizontal
@@ -1036,18 +1194,27 @@ and the derived files           xistercian.pdf
 % \end{macro}
 %
 % \begin{macro}{\cistercianstyle}
+% \begin{macro}[internal]{\xister@style}
 %   We allow users to define a style they can call with a single key name inside
 %   |\cisterciansetup|. To achieve that we just define a |NoVal| key that'll
-%   call a nested |\cisterciansetup|.
+%   call a nested |\cisterciansetup|, or a normal key if their style needs to
+%   take a value.
 %    \begin{macrocode}
-\protected\long\def\cistercianstyle#1#2%
+\protected\def\cistercianstyle
+  {%
+    \@ifstar
+      {\xister@style\ekvifdefined{\long\ekvdef}}%
+      {\xister@style\ekvifdefinedNoVal\ekvdefNoVal}%
+  }
+\protected\long\def\xister@style#1#2#3#4%
   {%
-    \ekvifdefinedNoVal{xister}{#1}%
-      {\PackageError{xistercian}{Key `#1' already defined}{}}%
-      {\protected\ekvdefNoVal{xister}{#1}{\cisterciansetup{#2}}}%
+    #1{xister}{#3}%
+      {\PackageError{xistercian}{Key `#3' already defined}{}}%
+      {\protected#2{xister}{#3}{\cisterciansetup{#4}}}%
   }
 %    \end{macrocode}
 % \end{macro}
+% \end{macro}
 %
 % \begin{macro}{\cistercian}
 % \begin{macro}[internal]{\@cistercian}
@@ -1222,14 +1389,14 @@ and the derived files           xistercian.pdf
 \newcommand*\xister@clip@v[1]
   {%
     \pgfpathrectanglecorners
-      {\pgfpoint{\dimexpr\ifdim\xister@X<\z@-\fi\xister@Tv\relax}{#1}}%
+      {\pgfpoint{\dimexpr\ifdim\xister@X<\z@-\fi\xister@Ts\relax}{#1}}%
       {\pgfpoint\xister@X\xister@Y}%
     \pgfusepath{clip}%
   }
 \newcommand*\xister@clip@h[1]
   {%
     \pgfpathrectanglecorners
-      {\pgfpoint{#1}{-\dimexpr\ifdim\xister@Y<\z@-\fi\xister@Th\relax}}%
+      {\pgfpoint{#1}{-\dimexpr\ifdim\xister@Y<\z@-\fi\xister@Ts\relax}}%
       {\pgfpoint{-\xister@X}\xister@Y}%
     \pgfusepath{clip}%
   }
@@ -1262,7 +1429,7 @@ and the derived files           xistercian.pdf
       }%
     \xister@drawdigit{3#1}%
       {%
-        \xister@TMPB=#3\dimexpr\xister@Tv-\xister@Tdd\relax
+        \xister@TMPB=#3\dimexpr\xister@Ts-\xister@Tdd\relax
         \xister@clip@v\xister@XY@share
         \pgfsetlinewidth{2\xister@Tdd}%
         \pgfpathmoveto{\pgfpoint\xister@TMPB\xister@XY@share}%
@@ -1272,7 +1439,7 @@ and the derived files           xistercian.pdf
     \xister@drawdigit{4#1}%
       {%
         \xister@clip@v\z@
-        \xister@TMPB=#3\dimexpr\xister@Tv-\xister@Tdu\relax
+        \xister@TMPB=#3\dimexpr\xister@Ts-\xister@Tdu\relax
         \pgfsetlinewidth{2\xister@Tdu}%
         \pgfpathmoveto{\pgfpoint\xister@TMPB\xister@Y}%
         \pgfpathlineto{\pgfpoint\xister@TMPB\xister@XY@share}%
@@ -1283,7 +1450,7 @@ and the derived files           xistercian.pdf
         \ifxister@five@triangle@
           \xister@clip@v\z@
           \xister@TMPB=%
-            #3\dimexpr\xister@Tv-\xister@Tdu\relax
+            #3\dimexpr\xister@Ts-\xister@Tdu\relax
           \pgfsetlinewidth{2\xister@Tdu}%
           \pgfpathmoveto{\pgfpoint\xister@TMPB\xister@Y}%
           \pgfpathlineto{\pgfpoint\xister@TMPB\xister@XY@share}%
@@ -1295,9 +1462,9 @@ and the derived files           xistercian.pdf
           \pgfpathlineto{\pgfpoint\xister@X\xister@TMPA}%
         \else\ifxister@five@dot@
           \pgfpathcircle
-            {\pgfpoint{\dimexpr\xister@X-#3\xister@five@dot\relax}%
-                      {\dimexpr\xister@Y-#2\xister@five@dot\relax}}%
-            {\xister@five@dot}%
+            {\pgfpoint{\dimexpr\xister@X-#3\xister@Five@dot\relax}%
+                      {\dimexpr\xister@Y-#2\xister@Five@dot\relax}}%
+            {\xister@Five@dot}%
           \pgfusepath{fill}%
         \else
           \xister@TMPB=\dimexpr\xister@X-#3\xister@Tv\relax
@@ -1328,12 +1495,60 @@ and the derived files           xistercian.pdf
         \rlap{\copy\csname xister@digitbox@2#1\endcsname}%
         \copy\csname xister@digitbox@6#1\endcsname
       }%
-    \xister@superimpose{9#1}%
-      {%
-        \rlap{\copy\csname xister@digitbox@1#1\endcsname}%
-        \rlap{\copy\csname xister@digitbox@2#1\endcsname}%
-        \copy\csname xister@digitbox@6#1\endcsname
-      }%
+    \ifxister@nine@triangle@
+      \xister@drawdigit{9#1}%
+        {%
+          \xister@TMPA=.5\dimexpr\xister@XY@share+\xister@Y\relax
+          \xister@TMPB=#3\dimexpr\xister@Ts-\xister@Tdd\relax
+          \xister@clip@v\z@
+          \pgfsetlinewidth{2\xister@Tdd}%
+          \pgfpathmoveto{\pgfpoint\xister@TMPB\xister@XY@share}%
+          \pgfpathlineto{\pgfpoint\xister@TMPB\xister@Y}%
+          \pgfpathlineto{\pgfpoint\xister@X\xister@TMPA}%
+          \pgfusepath{stroke}%
+          \xister@TMPB=#3\dimexpr\xister@Ts-\xister@Tdu\relax
+          \pgfsetlinewidth{2\xister@Tdu}%
+          \pgfpathmoveto{\pgfpoint\xister@TMPB\xister@Y}%
+          \pgfpathlineto{\pgfpoint\xister@TMPB\xister@XY@share}%
+          \pgfpathlineto{\pgfpoint\xister@X\xister@TMPA}%
+        }%
+    \else
+      \xister@superimpose{9#1}%
+        {%
+          \rlap{\copy\csname xister@digitbox@1#1\endcsname}%
+          \rlap{\copy\csname xister@digitbox@2#1\endcsname}%
+          \copy\csname xister@digitbox@6#1\endcsname
+        }%
+    \fi
+    \unless\ifxister@six@stroke@
+      \xister@drawdigit{6#1}%
+        {%
+          \ifxister@six@dot@
+            \xister@TMPA=\dimexpr\xister@X-#3\xister@Six@dot\relax
+            \pgfpathcircle
+              {\pgfpoint\xister@TMPA
+                        {\dimexpr\xister@Y-#2\xister@Six@dot\relax}}%
+              {\xister@Six@dot}%
+            \pgfpathcircle
+              {\pgfpoint\xister@TMPA
+                        {\dimexpr\xister@XY@share+#2\xister@Six@dot\relax}}%
+              {\xister@Six@dot}%
+            \pgfusepath{fill}%
+          \else
+            \xister@TMPB=\dimexpr\xister@X-#3\xister@Tv\relax
+            \xister@TMPA=2\dimexpr#2\xister@six@dash\xister@Tv\relax
+            \pgfsetlinewidth{2\xister@Tv}%
+            \pgfpathmoveto{\pgfpoint\xister@TMPB\xister@Y}%
+            \pgfpathlineto
+              {\pgfpoint\xister@TMPB
+                        {\dimexpr\xister@Y-\xister@TMPA\relax}}%
+            \pgfpathmoveto{\pgfpoint\xister@TMPB\xister@XY@share}%
+            \pgfpathlineto
+              {\pgfpoint\xister@TMPB
+                        {\dimexpr\xister@XY@share+\xister@TMPA\relax}}%
+          \fi
+        }%
+    \fi
   }
 \newcommand\xister@drawdigits@horizontal[3]
   {%
@@ -1341,20 +1556,20 @@ and the derived files           xistercian.pdf
     \xister@drawdigit{1#1}%
       {%
         \pgfsetlinewidth{2\xister@Tv}%
-        \xister@TMPA=-\dimexpr\xister@X-#3\xister@Tv\relax
+        \xister@TMPA=\dimexpr#3\xister@Tv-\xister@X\relax
         \pgfpathmoveto{\pgfpoint\xister@TMPA\z@}%
         \pgfpathlineto{\pgfpoint\xister@TMPA\xister@Y}%
       }%
     \xister@drawdigit{2#1}%
       {%
         \pgfsetlinewidth{2\xister@Tv}%
-        \xister@TMPA=-\dimexpr#3\xister@Tv-\xister@XY@share\relax
+        \xister@TMPA=\dimexpr\xister@XY@share-#3\xister@Tv\relax
         \pgfpathmoveto{\pgfpoint\xister@TMPA\z@}%
         \pgfpathlineto{\pgfpoint\xister@TMPA\xister@Y}%
       }%
     \xister@drawdigit{3#1}%
       {%
-        \xister@TMPB=#2\dimexpr\xister@Th-\xister@Tdu\relax
+        \xister@TMPB=#2\dimexpr\xister@Ts-\xister@Tdu\relax
         \xister@clip@h\xister@XY@share
         \pgfsetlinewidth{2\xister@Tdu}%
         \pgfpathmoveto{\pgfpoint\xister@XY@share\xister@TMPB}%
@@ -1364,7 +1579,7 @@ and the derived files           xistercian.pdf
     \xister@drawdigit{4#1}%
       {%
         \xister@clip@h\z@
-        \xister@TMPB=#2\dimexpr\xister@Th-\xister@Tdd\relax
+        \xister@TMPB=#2\dimexpr\xister@Ts-\xister@Tdd\relax
         \pgfsetlinewidth{2\xister@Tdd}%
         \pgfpathmoveto{\pgfpoint\xister@X\xister@TMPB}%
         \pgfpathlineto{\pgfpoint\xister@XY@share\xister@TMPB}%
@@ -1374,21 +1589,21 @@ and the derived files           xistercian.pdf
       {%
         \ifxister@five@triangle@
           \xister@clip@h\z@
-          \xister@TMPB=#2\dimexpr\xister@Th-\xister@Tdd\relax
+          \xister@TMPB=#2\dimexpr\xister@Ts-\xister@Tdd\relax
           \pgfsetlinewidth{2\xister@Tdd}%
           \pgfpathmoveto{\pgfpoint{-\xister@X}\xister@TMPB}%
           \pgfpathlineto{\pgfpoint\xister@XY@share\xister@TMPB}%
           \pgfpathlineto{\pgfpoint{-\xister@X}\xister@Y}%
           \pgfusepath{stroke,clip}%
           \pgfsetlinewidth{2\xister@Tv}%
-          \xister@TMPA=-\dimexpr\xister@X-#3\xister@Tv\relax
+          \xister@TMPA=\dimexpr#3\xister@Tv-\xister@X\relax
           \pgfpathmoveto{\pgfpoint\xister@TMPA\z@}%
           \pgfpathlineto{\pgfpoint\xister@TMPA\xister@Y}%
         \else\ifxister@five@dot@
           \pgfpathcircle
-            {\pgfpoint{-\dimexpr\xister@X-#3\xister@five@dot\relax}%
-                      {\dimexpr\xister@Y-#2\xister@five@dot\relax}}%
-            {\xister@five@dot}%
+            {\pgfpoint{\dimexpr#3\xister@Five@dot-\xister@X\relax}%
+                      {\dimexpr\xister@Y-#2\xister@Five@dot\relax}}%
+            {\xister@Five@dot}%
           \pgfusepath{fill}%
         \else
           \pgfsetlinewidth{2\xister@Th}%
@@ -1397,7 +1612,7 @@ and the derived files           xistercian.pdf
           \pgfpathlineto
             {%
               \pgfpoint
-                {-\dimexpr\xister@X-#3\xister@five@dash\xister@Th*2\relax}%
+                {\dimexpr#3\xister@five@dash\xister@Th*2-\xister@X\relax}%
                 \xister@TMPB
             }%
         \fi\fi
@@ -1419,12 +1634,60 @@ and the derived files           xistercian.pdf
         \rlap{\copy\csname xister@digitbox@2#1\endcsname}%
         \copy\csname xister@digitbox@6#1\endcsname
       }%
-    \xister@superimpose{9#1}%
-      {%
-        \rlap{\copy\csname xister@digitbox@1#1\endcsname}%
-        \rlap{\copy\csname xister@digitbox@2#1\endcsname}%
-        \copy\csname xister@digitbox@6#1\endcsname
-      }%
+    \ifxister@nine@triangle@
+      \xister@drawdigit{9#1}%
+        {%
+          \xister@TMPA=.5\dimexpr\xister@XY@share-\xister@X\relax
+          \xister@TMPB=#2\dimexpr\xister@Ts-\xister@Tdu\relax
+          \xister@clip@h\z@
+          \pgfsetlinewidth{2\xister@Tdu}%
+          \pgfpathmoveto{\pgfpoint\xister@XY@share\xister@TMPB}%
+          \pgfpathlineto{\pgfpoint{-\xister@X}\xister@TMPB}%
+          \pgfpathlineto{\pgfpoint\xister@TMPA\xister@Y}%
+          \pgfusepath{stroke}%
+          \xister@TMPB=#2\dimexpr\xister@Ts-\xister@Tdd\relax
+          \pgfsetlinewidth{2\xister@Tdd}%
+          \pgfpathmoveto{\pgfpoint\xister@X\xister@TMPB}%
+          \pgfpathlineto{\pgfpoint\xister@XY@share\xister@TMPB}%
+          \pgfpathlineto{\pgfpoint\xister@TMPA\xister@Y}%
+        }%
+    \else
+      \xister@superimpose{9#1}%
+        {%
+          \rlap{\copy\csname xister@digitbox@1#1\endcsname}%
+          \rlap{\copy\csname xister@digitbox@2#1\endcsname}%
+          \copy\csname xister@digitbox@6#1\endcsname
+        }%
+    \fi
+    \unless\ifxister@six@stroke@
+      \xister@drawdigit{6#1}%
+        {%
+          \ifxister@six@dot@
+            \xister@TMPA=\dimexpr\xister@Y-#2\xister@Six@dot\relax
+            \pgfpathcircle
+              {\pgfpoint{\dimexpr#3\xister@Six@dot-\xister@X\relax}%
+                        \xister@TMPA}%
+              {\xister@Six@dot}%
+            \pgfpathcircle
+              {\pgfpoint{\dimexpr\xister@XY@share-#3\xister@Six@dot\relax}%
+                        \xister@TMPA}%
+              {\xister@Six@dot}%
+            \pgfusepath{fill}%
+          \else
+            \pgfsetlinewidth{2\xister@Th}%
+            \xister@TMPB=\dimexpr\xister@Y-#2\xister@Th\relax
+            \xister@TMPA=2\dimexpr#3\xister@six@dash\xister@Th\relax
+            \pgfpathmoveto{\pgfpoint{-\xister@X}\xister@TMPB}%
+            \pgfpathlineto
+              {\pgfpoint{\dimexpr\xister@TMPA-\xister@X\relax}%
+                        \xister@TMPB}%
+            \pgfpathmoveto{\pgfpoint\xister@XY@share\xister@TMPB}%
+            \pgfpathlineto
+              {\pgfpoint{\dimexpr\xister@XY@share-\xister@TMPA\relax}%
+                        \xister@TMPB}%
+          \fi
+        }%
+    \fi
   }
 %    \end{macrocode}
 %   Each digit has the same bounding box and baseline which is specified here.
@@ -1456,7 +1719,7 @@ and the derived files           xistercian.pdf
   {%
     \xister@drawdigit{0}%
       {%
-        \pgfsetlinewidth{2\xister@Tv}%
+        \pgfsetlinewidth{2\xister@Ts}%
         \pgfpathmoveto{\pgfpoint\z@{-\xister@Y}}%
         \pgfpathlineto{\pgfpoint\z@\xister@Y}%
       }%
@@ -1465,7 +1728,7 @@ and the derived files           xistercian.pdf
   {%
     \xister@drawdigit{0}%
       {%
-        \pgfsetlinewidth{2\xister@Th}%
+        \pgfsetlinewidth{2\xister@Ts}%
         \pgfpathmoveto{\pgfpoint{-\xister@X}\z@}%
         \pgfpathlineto{\pgfpoint\xister@X\z@}%
       }%
@@ -1504,6 +1767,14 @@ and the derived files           xistercian.pdf
           \xister@Tv=\the\dimexpr.5\dimexpr\xister@tv\relax\relax
           \xister@Tdu=\the\dimexpr.5\dimexpr\xister@tdu\relax\relax
           \xister@Tdd=\the\dimexpr.5\dimexpr\xister@tdd\relax\relax
+          \xister@Five@dot=\the\dimexpr\xister@five@dot\relax
+          \xister@Six@dot=\the\dimexpr\xister@six@dot\relax
+          \ifx\xister@ts\@empty
+            \xister@Ts=%
+              \ifx\xister@build\xister@build@h\xister@Th\else\xister@Tv\fi
+          \else
+            \xister@Ts=\the\dimexpr.5\dimexpr\xister@ts\relax\relax
+          \fi
         }%
     \xister@tmp
   }
diff --git a/graphics/pgf/contrib/xistercian/xistercian.pdf b/graphics/pgf/contrib/xistercian/xistercian.pdf
index 5f291a44e6..c233b91a93 100644
--- a/graphics/pgf/contrib/xistercian/xistercian.pdf
+++ b/graphics/pgf/contrib/xistercian/xistercian.pdf
diff --git a/macros/latex/contrib/easybook/easybook.dtx b/macros/latex/contrib/easybook/easybook.dtx
index 11a4f89bb1..2081fc7d3d 100644
--- a/macros/latex/contrib/easybook/easybook.dtx
+++ b/macros/latex/contrib/easybook/easybook.dtx
@@ -15,7 +15,7 @@
 %<*class>
 \NeedsTeXFormat{LaTeX2e}[2020/10/01]
 \RequirePackage{l3keys2e}
-\ProvidesExplClass{easybook}{2021/12/18}{1.41Z}
+\ProvidesExplClass{easybook}{2021/12/20}{1.42}
   {Typeset Chinese theses or books}
 
 \bool_set_false:N \l__eb_compile_draft_bool
@@ -307,7 +307,7 @@
 %<*package>
 \NeedsTeXFormat{LaTeX2e}[2020/10/01]
 \RequirePackage{l3keys2e,etoolbox}
-\ProvidesExplPackage{easybase}{2021/12/18}{1.41Z}
+\ProvidesExplPackage{easybase}{2021/12/20}{1.42}
   {Typeset Chinese theses or books}
 
 \cs_generate_variant:Nn \dim_set:Nn { NV }
@@ -841,7 +841,7 @@
     \str_if_eq:nnTF {#1} { match }
       {
         \tl_set:cv { l__eb_fn#2_#3move_tl }
-          { l__spb_super_#3move_dim }
+          { l__spb_super_#3move_tl }
       }
       { \tl_set:cn { l__eb_fn#2_#3move_tl } {#1} }
   }
@@ -2430,7 +2430,7 @@
   }
 %</package>
 %<*tcolorbox>
-\ProvidesExplFile{eb-tcolorbox.cfg}{2021/12/18}{1.41Z}
+\ProvidesExplFile{eb-tcolorbox.cfg}{2021/12/20}{1.42}
   {Customization of tcolorbox for easybook}
 
 \cs_set_protected:Npn \setexercise #1
diff --git a/macros/latex/contrib/easybook/easybook.pdf b/macros/latex/contrib/easybook/easybook.pdf
index 1b725c2fc3..6ddf277387 100644
--- a/macros/latex/contrib/easybook/easybook.pdf
+++ b/macros/latex/contrib/easybook/easybook.pdf
diff --git a/macros/latex/contrib/easybook/easybook.tex b/macros/latex/contrib/easybook/easybook.tex
index 6aaee09c14..5b20e761a2 100644
--- a/macros/latex/contrib/easybook/easybook.tex
+++ b/macros/latex/contrib/easybook/easybook.tex
@@ -20,8 +20,8 @@
     name            = easybook,
     color-scheme    = blue,
     title           = EASYBOOK 使用手册,
-    version         = v1.41Z,
-    date            = 2021/12/18,
+    version         = v1.42,
+    date            = 2021/12/20,
     authors         = 瞿毅,
     info            = 排版简体中文学位论文和书籍,
     email           = q1jx@foxmail.com,
diff --git a/macros/latex/contrib/knowledge/README.md b/macros/latex/contrib/knowledge/README.md
index 5292d7886d..aeb2b6ed6d 100644
--- a/macros/latex/contrib/knowledge/README.md
+++ b/macros/latex/contrib/knowledge/README.md
@@ -3,8 +3,8 @@ This directory contains the package
 
      name: knowledge
      license: LaTeX Project Public License version 1.2 or above
-     version: v1.25
-     date: 2021/03/31
+     version: v1.26
+     date: 2021/12/20
      author: Thomas Colcombet
      mail: thomas.colcombet@irif.fr
      web: https://www.irif.fr/~colcombe/knowledge_en.html
diff --git a/macros/latex/contrib/knowledge/knowledge-code.dtx b/macros/latex/contrib/knowledge/knowledge-code.dtx
index 8c5c6aeb43..3b9b18e8a2 100644
--- a/macros/latex/contrib/knowledge/knowledge-code.dtx
+++ b/macros/latex/contrib/knowledge/knowledge-code.dtx
@@ -23,7 +23,7 @@
 %
 % \iffalse
 %<head>\usepackage{expl3}
-%<head>\ProvidesExplPackage{knowledge}{2021/03/31}{1.25}{}
+%<head>\ProvidesExplPackage{knowledge}{2021/12/20}{1.26}{}
 %<*driver>
 \def\knowledgecode{active}
 \input{knowledge.tex}
@@ -58,6 +58,7 @@
 % \changes{1.23}{2020/04/25}{minor change} %
 % \changes{1.24}{2020/09/22}{silent option} %
 % \changes{1.25}{2021/03/31}{bug correction} %
+% \changes{1.26}{2021/12/20}{enhanced math+other functionalities+extra options} %
 % \GetFileInfo{knowledge.sty} %
 % \DoNotIndex{}
 %
@@ -77,8 +78,8 @@ This directory contains the package
 
      name: knowledge
      license: LaTeX Project Public License version 1.2 or above
-     version: v1.25
-     date: 2021/03/31
+     version: v1.26
+     date: 2021/12/20
      author: Thomas Colcombet
      mail: thomas.colcombet@irif.fr
      web: https://www.irif.fr/~colcombe/knowledge_en.html
@@ -198,7 +199,7 @@ This directory contains the package
 \cs_new:Nn\knowledge_info:n
   {\msg_info:nnn{knowledge}{knowledge~info}{#1}}
 \cs_new:Nn\knowledge_warning:n{
-  	\msg_warning:nnn{knowledge}{knowledge~warning}{#1}
+     \msg_warning:nnn{knowledge}{knowledge~warning}{#1}
   }
 \cs_new:Nn\knowledge_error:n
   {\msg_error:nnn{knowledge}{knowledge~error}{#1}} 
@@ -221,25 +222,25 @@ This directory contains the package
 %
 %    \begin{macrocode}
 \cs_new:Npn\knowledge_warning:nn{
-	\bool_if:NTF\knowledge_warningsilent_bool
-		\use_none:nn
-		\msg_warning:nn
+   \bool_if:NTF\knowledge_warningsilent_bool
+      \use_none:nn
+      \msg_warning:nn
 }
 \cs_new:Npn\knowledge_warning:nnn{
-	\bool_if:NTF\knowledge_warningsilent_bool
-		\use_none:nnn
-		\msg_warning:nnn
+   \bool_if:NTF\knowledge_warningsilent_bool
+      \use_none:nnn
+      \msg_warning:nnn
 }
 \cs_new:Npn\knowledge_warning:nnnn{
-	\bool_if:NTF\knowledge_warningsilent_bool
-		\use_none:nnnn
-		\msg_warning:nnnn
+   \bool_if:NTF\knowledge_warningsilent_bool
+      \use_none:nnnn
+      \msg_warning:nnnn
 }
 \cs_generate_variant:Nn\knowledge_warning:nnnn{nnxx}
 \cs_new:Npn\knowledge_warning:nnnnn{
-	\bool_if:NTF\knowledge_warningsilent_bool
-		\use_none:nnnnn
-		\msg_warning:nnnnn
+   \bool_if:NTF\knowledge_warningsilent_bool
+      \use_none:nnnnn
+      \msg_warning:nnnnn
 }
 \cs_generate_variant:Nn\knowledge_warning:nnnnn{nnxxx}
 %    \end{macrocode}
@@ -539,10 +540,70 @@ This directory contains the package
 %
 %
 %    \begin{macrocode}
+\tl_new:N\knowledge_option_anchor_point_color_tl
+\tl_set:Nn\knowledge_option_anchor_point_color_tl{red}
+\KnowledgeConfigureTrigger{anchor~point~color}
+  {\tl_set:Nn\knowledge_option_anchor_point_color_tl{#1}}
+\KnowledgeConfigureTrigger{AP~color}
+  {\tl_set:Nn\knowledge_option_anchor_point_color_tl{#1}}
+\tl_new:N\knowledge_option_anchor_point_shift_tl
+\tl_set:Nn\knowledge_option_anchor_point_shift_tl{(0,0)}
+\KnowledgeConfigureTrigger{anchor~point~shift}
+  {\tl_set:Nn\knowledge_option_anchor_point_shift_tl{(#1)}}
+\KnowledgeConfigureTrigger{AP~shift}
+  {\tl_set:Nn\knowledge_option_anchor_point_shift_tl{(#1)}}
+  
+\cs_new:Nn\knowledge_anchor_point_corner:n{\line(0,-1){#1}\line(1,0){#1}}
+\cs_new:Nn\knowledge_anchor_point_cross:n{
+	\put(0,0){\line(0,-1){#1}}\put(0,0){\line(0,1){#1}}\put(0,0){\line(-1,0){#1}}\put(0,0){\line(1,0){#1}}}
+\tl_new:N\knowledge_option_anchor_point_shape_tl
+\tl_set:Nn\knowledge_option_anchor_point_shape_tl{\knowledge_anchor_point_corner:n{0.2}}
+
+\tl_const:Nn\knowledge_APshape_name_corner_tl{corner}
+\tl_const:Nn\knowledge_APshape_name_tinycorner_tl{tiny~corner}
+\tl_const:Nn\knowledge_APshape_name_smallcorner_tl{small~corner}
+\tl_const:Nn\knowledge_APshape_name_largecorner_tl{large~corner}
+\tl_const:Nn\knowledge_APshape_name_cross_tl{cross}
+\tl_const:Nn\knowledge_APshape_name_tinycross_tl{tiny~cross}
+\tl_const:Nn\knowledge_APshape_name_smallcross_tl{small~cross}
+\tl_const:Nn\knowledge_APshape_name_largecross_tl{large~cross}
+
+\KnowledgeConfigureTrigger{AP~shape}
+  {\knowledge_set_anchor_point_shape:n{#1}}
+\KnowledgeConfigureTrigger{anchor~point~shape}
+  {\knowledge_set_anchor_point_shape:n{#1}}
+\cs_new:Nn	\knowledge_set_anchor_point_shape:n{	
+    \tl_set:Nn\l_tmpa_tl{#1}
+    \tl_case:NnTF\l_tmpa_tl{
+    	\knowledge_APshape_name_corner_t
+		{\tl_set:Nn\knowledge_option_anchor_point_shape_tl{\knowledge_anchor_point_corner:n{0.5}}}
+    	\knowledge_APshape_name_tinycorner_tl 
+		{\tl_set:Nn\knowledge_option_anchor_point_shape_tl{\knowledge_anchor_point_corner:n{0.1}}}
+    	\knowledge_APshape_name_smallcorner_tl
+		{\tl_set:Nn\knowledge_option_anchor_point_shape_tl{\knowledge_anchor_point_corner:n{0.2}}}
+    	\knowledge_APshape_name_largecorner_tl 
+		{\tl_set:Nn\knowledge_option_anchor_point_shape_tl{\knowledge_anchor_point_corner:n{0.8}}}
+    	\knowledge_APshape_name_cross_tl
+		{\tl_set:Nn\knowledge_option_anchor_point_shape_tl{\knowledge_anchor_point_cross:n{0.5}}}
+    	\knowledge_APshape_name_tinycross_tl 
+		{\tl_set:Nn\knowledge_option_anchor_point_shape_tl{\knowledge_anchor_point_cross:n{0.1}}}
+    	\knowledge_APshape_name_smallcross_tl
+		{\tl_set:Nn\knowledge_option_anchor_point_shape_tl{\knowledge_anchor_point_cross:n{0.2}}}
+    	\knowledge_APshape_name_largecross_tl 
+		{\tl_set:Nn\knowledge_option_anchor_point_shape_tl{\knowledge_anchor_point_cross:n{0.8}}}
+    }{}{
+    	\tl_set:Nn\knowledge_option_anchor_point_shape_tl{#1}
+    }
+  }
+%    \end{macrocode}
+%
+%
+%    \begin{macrocode}
 \KnowledgeConfigureTrigger{ fix~hyperref~twocolumn }
   {\knowledgeFixHyperrefTwocolumn}
 \KnowledgeConfigureTrigger{ notion }
   {\KnowledgeConfigureNotion{notion}
+   \knowledge_directives_require_aci_package:nn{notion}{hyperref}
    \knowledgesetvariant\kl{suggestion=notion}
    \knowledgesetvariant\intro{suggestion=notion}
    \knowledgesetvariant\phantomintro{suggestion=notion}
@@ -583,6 +644,7 @@ This directory contains the package
 \knowledge_option_aci_test_loaded:n{hyperref}
 \knowledge_option_aci_test_loaded:n{xcolor}
 \knowledge_option_aci_test_loaded:n{makeidx}
+\knowledge_option_aci_test_loaded:n{cleveref}
 %    \end{macrocode}
 %\begin{quote}\tt
 %\csintro{\knowledge_option_aci_define:n}\{package name\}
@@ -627,6 +689,7 @@ This directory contains the package
 \knowledge_option_aci_define:n{hyperref}
 \knowledge_option_aci_define:n{xcolor}
 \knowledge_option_aci_define:n{makeidx}
+\knowledge_option_aci_define:n{cleveref}
 %    \end{macrocode}
 %
 % \subsubsection{Executing the package options}
@@ -698,6 +761,7 @@ This directory contains the package
 \knowledge_option_aci_autoload:nnn{ hyperref }{}{}
 \knowledge_option_aci_autoload:nn{ xcolor }{}
 \knowledge_option_aci_autoload:nn{ makeidx }{}
+\knowledge_option_aci_autoload:nn{ cleveref }{}
 %    \end{macrocode}
 %
 %
@@ -2424,7 +2488,7 @@ This directory contains the package
   \keys_if_exist:nnTF{ knowledge~directives }{ #2 }
     {\IfBooleanTF{#1}
        {\knowledgedirective:nnn{#2}{#3}{#4}}
-       {\msg_error:nnn{ knowledge }{  knowledgedirective~redifinition }{#2}}}
+       {\msg_error:nnn{ knowledge }{  knowledgedirective~redefinition }{#2}}}
     {\knowledgedirective:nnn{#2}{#3}{#4}}
   \kl_hide_end:
 }
@@ -2432,10 +2496,10 @@ This directory contains the package
    \cs_set:cn
        {knowledgedirective_#1:n}
        {\keys_set:nn{ knowledge~directives }{#3}}
-     \keys_define:nn{ knowledge~directives }
+    \keys_define:nn{ knowledge~directives }
        {#1 .code:n = {\use:c{knowledgedirective_#1:n}{##1}}}
-     \IfNoValueF{#2}
-       {\keys_define:nn{ knowledge~directives }{#2 .default:n = {#2}}}
+    \IfNoValueF{#2}
+       {\keys_define:nn{ knowledge~directives }{#1 .default:n = {#2}}}
 }
 %    \end{macrocode}
 %
@@ -2521,7 +2585,7 @@ This directory contains the package
        {\use:c{knowledge_kl_\tl_to_str:V\knowledge_kl_modifiers_tl _init_tl}}
        {\knowledge_error:x
            {Unknown~variant~modifier~sequence~`\exp_not:V\knowledge_kl_modifiers_tl'.}}
-   %
+    %
     \knowledge_kl_modifiers_reset:
     %
     \knowledge_kl_use_styles:x{\knowledge_kl_default_style_tl}
@@ -2694,7 +2758,8 @@ This directory contains the package
 % When the \kl{knowledge} is found, it is eventually executed using
 % \begin{code}
 % \csintro{\knowledge_kl_exec:nnn}\{namespace\}\{instance\}\{key\}
-% \end{code} The argument is a control sequence pointing to the \kl{knowledge}. It is first executed
+% \end{code} 
+% The argument is a control sequence pointing to the \kl{knowledge}. It is first executed
 % in order to set the variables.
 % Then, the token of the \kl{knowledge} is stored in the variable \cs{\knowledge_kl_resourcetoken_tl}.
 % Then, if a \kl{style} is given, it is executed. The next step is to update the \kl{knowledge}
@@ -2771,8 +2836,6 @@ This directory contains the package
 %
 %
 %
-%
-%
 % \subsubsection{Error handling}
 %
 %
@@ -2946,12 +3009,6 @@ This directory contains the package
      {}}
 %    \end{macrocode}
 %
-%    \begin{macrocode}
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-%    \end{macrocode}
-%
 % \subsubsection{Implementation of \cs{\knowledgenewvariant}}
 %
 %    \begin{macrocode}
@@ -3004,6 +3061,8 @@ This directory contains the package
             \exp_not:c{knowledge_kl_\cs_to_str:N#1_unknown_style_cont_tl}
         \exp_not:n{\tl_set_eq:NN\knowledge_kl_styledirectives_tl}
             \exp_not:c{knowledge_kl_\cs_to_str:N#1 _styledirectives_tl}
+        \exp_not:n{\tl_set_eq:NN\knowledge_kl_display_process_tl}
+            \exp_not:c{knowledge_kl_\cs_to_str:N#1 _display_process_tl}
         \exp_not:c{knowledge_kl_\cs_to_str:N#1 _autoknowledge_tl}
         }
    % 
@@ -3037,6 +3096,9 @@ This directory contains the package
    namespace .code:n =
       {\tl_set:cn{knowledge_kl_\knowledge_variant_key_tl _namespace_tl}{#1}},
    %
+   display~code .code:n =
+      {\tl_set:cn{knowledge_kl_\knowledge_variant_key_tl _display_process_tl}{#1}},
+   %
    unknown~warning .choices:nn = {true,false}
       {\bool_set_text:cn{knowledge_kl_\knowledge_variant_key_tl _unknownwarning_bool}{#1}},
    %
@@ -3327,7 +3389,9 @@ This directory contains the package
 %
 %
 %
-%
+%  \csintro{\knowledge_kl_display_generic:n} applies a code to the current displaycode, which is surrounded by braces.
+%  \csintro{\knowledge_kl_display_generic_cond:Nn} does the same thing under condition
+% of a boolean (see code of \cs{\knowledge_kl_default_compute_code:}).
 %    \begin{macrocode}
 \cs_new:Nn\knowledge_kl_display_generic:n
   {\tl_gset:Nx\knowledge_display_code_tl
@@ -3340,8 +3404,17 @@ This directory contains the package
 \cs_generate_variant:Nn\knowledge_kl_display_generic:n{x}
 \cs_generate_variant:Nn\knowledge_kl_display_generic_cond:Nn{Nx}
 %    \end{macrocode}
+% \AP \csintro{\knowledge_kl_compute_code:} tests whether a special display process is given, or otherwise
+% defaults to the standard one.
 %    \begin{macrocode}
 \cs_new:Nn\knowledge_kl_compute_code:{
+  \tl_if_exist_ne:NTF\knowledge_kl_display_process_tl
+     \knowledge_kl_display_process_tl
+     \knowledge_kl_default_compute_code:
+}
+%    \end{macrocode}
+%    \begin{macrocode}
+\cs_new:Nn\knowledge_kl_default_compute_code:{
      \tl_if_exist_ne:NTF\knowledge_kl_forcedtext_tl
         {\tl_gset_eq:NN\knowledge_display_code_tl\knowledge_kl_forcedtext_tl}
         {\tl_gset_eq:NN\knowledge_display_code_tl\knowledge_kl_text_tl}
@@ -3363,6 +3436,9 @@ This directory contains the package
      %
      \bool_if:NT\knowledge_xcolor_active_bool
         \knowledge_kl_compute_code_xcolor:
+     %
+     \knowledge_kl_compute_code_hyperreftarget:
+     %
      \bool_if:NT\knowledge_hyperref_active_bool
         \knowledge_kl_compute_code_hyperref:
      %
@@ -3394,20 +3470,22 @@ This directory contains the package
      \bool_if:NT\kl_invisible_bool
          {\tl_gclear:N\knowledge_display_code_tl}
 }
+%    \end{macrocode}
+%    \begin{macrocode}
 \cs_new:Nn\knowledge_kl_compute_code_xcolor:{
   \tl_if_empty:NF\knowledge_kl_color_tl
      {\knowledge_kl_display_generic:x{\exp_not:N\textcolor{\knowledge_kl_color_tl}}}
   \tl_if_empty:NF\knowledge_kl_colorbox_tl
      {\knowledge_kl_display_generic:x{\exp_not:N\colorbox{\knowledge_kl_colorbox_tl}}}   
 }
+%    \end{macrocode}
+%    \begin{macrocode}
 \cs_new:Nn\knowledge_kl_compute_code_hyperref:{
   \tl_if_exist_ne:NT\knowledge_kl_ref_tl
     {\knowledge_kl_display_generic:x
        {\exp_not:N\kl_hyperlink_silentref:nn
          {\exp_not:V\knowledge_kl_ref_tl}}}
   %
-  \knowledge_kl_compute_code_hyperreftarget:
-  %
   \bool_if:NT\kl_autoreflink_bool
     {\tl_if_exist_ne:NT\knowledge_kl_autoref_tl
       {\knowledge_kl_display_generic:x
@@ -3420,6 +3498,8 @@ This directory contains the package
       {\exp_not:N\kl_hyperlink_url:nn
         {\exp_not:V\knowledge_kl_url_tl}}}
 }
+%    \end{macrocode}
+%    \begin{macrocode}
 \cs_new:Nn\knowledge_kl_compute_code_hyperreftarget:{
   \bool_if:NT\kl_autoreftarget_bool
    {\tl_if_exist_ne:NT\knowledge_kl_autoref_tl
@@ -3435,25 +3515,10 @@ This directory contains the package
        {\exp_not:N\KAuxAutorefTarget
             \exp_not:o\knowledge_kl_resourcearguments_tl}}
 }
-\cs_new:Nn\knowledge_kl_compute_code_makeidx:{
-  \tl_if_exist_ne:NTF\knowledge_kl_index_tl
-      {\exp_args:Nx\index
-         {\tl_if_exist_ne:NTF\knowledge_kl_index_parent_key_tl
-                 {\exp_not:V\knowledge_kl_index_parent_key_tl!}{}
-           \tl_if_exist_ne:NTF\knowledge_kl_index_key_tl
-                 {\exp_not:V\knowledge_kl_index_key_tl@}{}
-           \expandafter\tl_to_str:n\expandafter{\knowledge_kl_index_tl}
-           \tl_if_exist_ne:NTF\knowledge_kl_index_number_style_tl
-                 {|\exp_not:V\knowledge_kl_index_number_style_tl}{}
-         }}{}
-}
-
-%\cs_new:Nn\knowledge_kl_default_display_code_fbox:n
-%  {\bool_if:NTF\kl_fbox_bool{\exp_not:N\fbox{#1}}{#1}}
 %    \end{macrocode}
 %    \begin{macrocode}
 \cs_new:Npn\kl_up:n{\mode_if_math:TF\use:n\textup}
-\cs_new:Npn\kl_md:n{\mode_if_math:TF\mathmd\textmd}
+\cs_new:Npn\kl_md:n{\mode_if_math:TF\use:n\textmd}
 \cs_new:Npn\kl_sc:n{\mode_if_math:TF\mathsc\textsc}
 \cs_new:Npn\kl_it:n{\mode_if_math:TF\mathit\textit}
 \cs_new:Npn\mathscerror#1{\knowledge_error:n{`smallcaps'~only~allowed~in~math~mode.}}
@@ -3498,6 +3563,32 @@ This directory contains the package
 }
 %    \end{macrocode}
 %
+%
+% \subsection{Displaying labels}
+% Code for \cs{\kref}, \cs{\kpageref}, \cs{\kcref} and \cs{\kCref}.
+% 
+% \csintro{\knowledgedisplayref} is to be used when defining a variant. It takes a macro, and creates the display code
+% which applies it to the label reference of the knowledge. See code of \cs{\kref}, \cs{\kcref}, \dots
+%    \begin{macrocode}
+\cs_new:Nn\knowledge_labelref_display_process:n{
+  \tl_if_exist_ne:NTF\knowledge_kl_ref_tl
+    {\tl_gset:Nx\knowledge_display_code_tl
+       {\exp_not:n{#1}
+         {\exp_not:V\knowledge_kl_ref_tl}}
+  }{
+  \bool_if:NTF\kl_autoreflink_bool
+    {\tl_if_exist_ne:NT\knowledge_kl_autoref_tl
+      {\tl_gset:Nx\knowledge_display_code_tl
+         {\exp_not:n{#1}
+             {\exp_not:V\knowledge_kl_autoref_tl}}
+      }
+  }{  \tl_gset:Nn\knowledge_display_code_tl{???}
+   }
+  }
+}
+\cs_set_eq:NN\knowledgedisplayref\knowledge_labelref_display_process:n
+%    \end{macrocode}
+%
 % \subsubsection{Other commands}
 %
 % \paragraph{\cs{\AP} and \cs{\itemAP}}
@@ -3555,16 +3646,16 @@ This directory contains the package
       \smash{\llap{\knowledge_AP_mark:\kern0.3em}}
       \vss}}
 \cs_new:Nn\knowledge_AP_mark:{%
-       \setlength\unitlength{1em}
-         \begin{picture}(0,0)
-         \put(0,1.2){
-            \bool_if:NT\knowledge_hyperref_active_bool
-               {\put(-0.05,-1.04){\phantomsection}}
-            \bool_if:NT\knowledge_configuration_visibleAP_bool
+        \setlength\unitlength{1em}
+        \begin{picture}(0,0)
+          \put(0,1.1){\expandafter\put\knowledge_option_anchor_point_shift_tl{
+              \bool_if:NT\knowledge_hyperref_active_bool
+                 {\put(-0.05,-1.18){\phantomsection}}
+              \bool_if:NT\knowledge_configuration_visibleAP_bool
                  {\bool_if:NTF\knowledge_xcolor_active_bool
-                    {\textcolor{red}}{\use:n}
-                    {\line(0,-1){0.5}\line(1,0){0.5}}}}
-         \end{picture}{}}
+                    {\textcolor{\knowledge_option_anchor_point_color_tl}}{\use:n}
+                 {\knowledge_option_anchor_point_shape_tl}}}}
+        \end{picture}{}}
 \cs_new:Nn\knowledge_itemAP:{
   \hbox_overlap_left:n
       {\knowledge_AP_mark:\hspace{1em}}
@@ -3653,91 +3744,180 @@ This directory contains the package
 
 % \subsection{Mathematics}
 %
-% \subsubsection{Capturing subscripts, superscripts and primes}
-% We know provide the core code for parsing subscripts, superscripts and primes.
-%
-% The central command is  \csintro{\klparse_absorb_modifiers:}.
-% This command parses all the subscripts and so on occurring after,
-% and then launches \csintro{\klparse_absorb_modifiers_exec:}
-% (that is supposed to have been set with the proper code).
-% At the end, the token lists \csintro{\klparse_primes_tl}, \csintro{\klparse_subscript_tl}
-% and \csintro{\klparse_supscript_tl}
-% contain the texts that have been collected during the parsing. 
-% If a subscript or a superscript is not present, then the corresponding token list
-% is set equal to be \cs{\klparse_novalue_tl}. This is not the case for primes:
-% if there are no primes, then the token list \cs{\klparse_primes_tl} is simply empty.
-% Parsing subscripts, superscripts and primes can be deactivated or activated by setting appropriately the
-% macros \cs{\klparse_if_load_primes:TF}
-% \cs{\klparse_if_load_subscript:TF} and \cs{\klparse_if_load_supscript:TF}.
-%    \begin{macrocode}
-\cs_new:Nn\klparse_absorb_modifiers:
-  {\tl_set_eq:NN\klparse_primes_tl\c_empty_tl
-   \bool_if:NTF\klparse_load_primes_bool
-     \klparse_absorb_modifiers_pses:
-     \klparse_absorb_modifiers_ses:
-  }
+%    \begin{macrocode}
+\knowledgenewvariant\rekl{
+  namespace= default,
+  default~style= {autoref~link},
+  unknown~style= kl~unknown,
+  unknown~style~cont= kl~unknown~cont,
+  style~directive= style
+}
+\knowledgevariantmodifier{\intro*\rekl}{\reintro}
+\knowledgevariantmodifier{\rekl*\intro}{\reintro}
+\knowledgevariantmodifier{\reintro*\rekl}{\reintro}
+\knowledgevariantmodifier{\rekl*\reintro}{\reintro}
+\knowledgevariantmodifier{\rekl*\kl}{\rekl}
+\knowledgevariantmodifier{\kl*\rekl}{\rekl}
+\knowledgevariantmodifier{\rekl*\rekl}{\rekl}
+\knowledgevariantmodifier{\phantomintro*\rekl}{\phantomkl}
+\knowledgevariantmodifier{\rekl*\phantomintro}{\phantomkl}
+\knowledgevariantmodifier{\phantomintro*\kl}{\phantomintro}
+\knowledgevariantmodifier{\phantomkl*\kl}{\phantomkl}
 
-\cs_new:Nn\klparse_absorb_modifiers_pses:
-  {\klparse_ifnextchar:NTF'
-     {\tl_put_right:Nn\klparse_primes_tl'
-       \use_i:nn\klparse_absorb_modifiers_pses:}
-     \klparse_absorb_modifiers_ses:
-   }
+\knowledgedirective{automatic~in~command}{notion}
+%    \end{macrocode}
+%    \begin{macrocode}
 
-\cs_new:Nn\klparse_absorb_modifiers_ses:
-  {\bool_if:NTF\klparse_load_subscript_bool
-       {\klparse_absorb_subscript:Nn\klparse_subscript_tl\klparse_absorb_modifiers_es:}
-       {\tl_set_eq:NN\klparse_subscript_tl\klparse_novalue_tl
-        \klparse_absorb_modifiers_es:}
-  }
+\tl_gset:Nn\knowledge_inner_modifer_re_tl{\rekl*}
 
-\cs_new:Nn\klparse_absorb_modifiers_es:
-  {\bool_if:NTF\klparse_load_supscript_bool
-    {\tl_if_empty:NTF\klparse_primes_tl
-       {\klparse_absorb_supscript:Nn\klparse_supscript_tl
-        \klparse_absorb_modifiers_ts:}
-       {\tl_set_eq:NN\klparse_supscript_tl\klparse_novalue_tl
-         \klparse_absorb_modifiers_exec:}}
-      {\tl_set_eq:NN\klparse_supscript_tl\klparse_novalue_tl
-        \klparse_absorb_modifiers_exec:}
-  }
+\int_new:N\knowledge_inner_modifier_count_int
+\cs_new:Nn\knowledge_inner_command:
+      {knowledge_cmdkl \int_to_arabic:n\knowledge_inner_modifier_count_int :n}
 
-\cs_new:Nn\klparse_absorb_modifiers_ts:
-  {\bool_if:NTF\klparse_load_subscript_bool{
-     \klparse_if_novalue:NTF\klparse_subscript_tl
-      {\klparse_absorb_subscript:Nn\klparse_subscript_tl\klparse_absorb_modifiers_exec:}
-       \klparse_absorb_modifiers_exec:}
-     {\klparse_absorb_modifiers_exec:}
-  }
-%    \end{macrocode}
-%
-% The macros \csintro{\klparse_absorb_subscript:Nn} and \csintro{\klparse_absorb_supscript:Nn}.
-% These are weirdly defined because the catcode of underscore is changed.
-%    \begin{macrocode}
-\ExplSyntaxOff
-\def\absorbsupscriptNn{\absorbopt ^}
-\def\absorbsubscriptNn{\absorbopt _}
-\ExplSyntaxOn
-\cs_set_eq:NN\klparse_absorb_supscript:Nn\absorbsupscriptNn
-\cs_set_eq:NN\klparse_absorb_subscript:Nn\absorbsubscriptNn
+      
+\NewDocumentCommand\withkl{mm}{
+   \int_gincr:N\knowledge_inner_modifier_count_int
+   \group_begin:
+   \group_end:
+   \cs_gset:cpx
+      {\knowledge_inner_command:}
+        {\exp_not:N\cs_gset:Npn
+               \exp_not:c{\knowledge_inner_command:}
+               {\knowledge_inner_modifer_re_tl\knowledge_kl_modifiers_tl\exp_not:n{#1}}
+         \knowledge_kl_modifiers_tl\exp_not:n{#1}}
+   \knowledge_kl_modifiers_reset:
+   #2{}{}
+   \int_gdecr:N\knowledge_inner_modifier_count_int
+}
 
-\cs_new:Npn\absorbopt#1#2#3
-    {\klparse_ifnextchar:NTF #1
-       {\klparse_absorbopt_ii:NnNn #2 {#3}}
-       {\tl_set_eq:NN #2 \klparse_novalue_tl #3}}
+\cs_new:Nn\knowledge_error_unexpected_cmdkl:{
+   \knowledge_error:n{\cmdkl~is~only~allowed~inside~\withkl~or~in~macros~defined~using~\knowledgenewcommand-like~commands}
+}
+\newrobustcmd\cmdkl[1]{
+   \int_compare:nNnTF\knowledge_inner_modifier_count_int=0
+      \knowledge_error_unexpected_cmdkl:
+      \use:c{\knowledge_inner_command:}{#1}
+}
 
-\cs_new:Nn\klparse_absorbopt_ii:NnNn
-    {\tl_set:Nn #1 {#4} #2 }
+% 1: command to extend, 2:, 3,4,5,6: the newcommand arguments (token sequence, optional star, first optional parameter, second optional parameter, and body of the definition).
+\NewDocumentCommand\knowledge_knowledgified_newcommand:NNwn{mmsoom}{
+   \use:x{
+      \exp_not:n{#1{#2}}
+      \IfBooleanTF {#3} {*} {}
+      \IfNoValueF{#4}{\exp_not:n{[{#4}]}}
+      \IfNoValueF{#5}{\exp_not:n{[{#5}]}} }
+   {\withkl{\kl[{#2}]}{#6}}   
+   \knowledge{#2}{automatic~in~command}
+}
+\NewDocumentCommand\knowledge_knowledgified_NewDocumentCommand:NNnn{mmmm}{
+   #1#2{#3}{\withkl{\kl[{#2}]}{#4}}
+   \knowledge{#2}{cmdkl}
+}
+\NewDocumentCommand\KnowledgifyNewcommand{m}{
+   \cs_if_exist:NTF#1{
+      \exp_args:Nc\NewDocumentCommand{knowledge\cs_to_str:N#1}{}
+         {\knowledge_knowledgified_newcommand:NNwn#1}
+   }{
+      %\tl_show:n{Unknown~#1~in~\KnowledgifyNewcommand}
+      \use:x{\exp_not:N\NewDocumentCommand
+         \exp_not:c{knowledge\cs_to_str:N#1}
+         {}
+         {\exp_not:N\knowledge_error:n{
+            The~command~\exp_not:N#1~should~be~defined~for~\exp_not:c
+               {knowledge\cs_to_str:N#1}~to~be~usable.}}
+         }
+   }
+}
+\NewDocumentCommand\KnowledgifyNewDocumentCommand{m}{
+   \cs_if_exist:NTF#1{
+      \exp_args:Nc\NewDocumentCommand{Knowledge\cs_to_str:N#1}{}
+         {\knowledge_knowledgified_NewDocumentCommand:NNnn#1}
+   }{
+      %\tl_show:n{Unknown~#1~in~\KnowledgifyNewDocumentCommand}
+      \use:x{\exp_not:N\NewDocumentCommand
+         \exp_not:c{knowledge\cs_to_str:N#1}
+         {}
+         {\exp_not:N\knowledge_error:n{
+            The~command~\exp_not:N#1~should~be~defined~for~\exp_not:c
+               {Knowledge\cs_to_str:N#1}~to~be~usable.}}
+         }
+   }
+}
 %    \end{macrocode}
-%
-%    \begin{macrocode}
-\cs_set_eq:NN\klparse_if_load_subscript:TF\use_i:nn
-\cs_set_eq:NN\klparse_if_load_supscript:TF\use_i:nn
-\cs_set_eq:NN\klparse_if_load_primes:TF\use_i:nn
+%    Commands from LaTeX.
+%    \begin{macrocode}
+\KnowledgifyNewcommand\newcommand
+\KnowledgifyNewcommand\renewcommand
+\KnowledgifyNewcommand\newrobustcmd
+%    \end{macrocode}
+%    Commands from "xparse@@package".
+%    \begin{macrocode}
+\KnowledgifyNewDocumentCommand\NewDocumentCommand
+\KnowledgifyNewDocumentCommand\RenewDocumentCommand
+\KnowledgifyNewDocumentCommand\ProvideDocumentCommand
+\KnowledgifyNewDocumentCommand\DeclareDocumentCommand
+%    \end{macrocode}
+%    Commands from "mathcommand@@package" (
+% \csintro\knowledgedeclarecommand,
+% \csintro\knowledgenewmathcommand,
+% \csintro\knowledgenewtextcommand,
+% \csintro\knowledgerenewmathcommand,
+% \csintro\knowledgerenewtextcommand,
+% \csintro\knowledgedeclaremathcommand,
+% \csintro\knowledgedeclaretextcommand,
+% \csintro\KnowledgeNewDocumentMathCommand,
+% \csintro\KnowledgeNewDocumentTextCommand,
+% \csintro\KnowledgeRenewDocumentMathCommand,
+% \csintro\KnowledgeRenewDocumentTextCommand,
+% \csintro\KnowledgeProvideDocumentMathCommand,
+% \csintro\KnowledgeProvideDocumentTextCommand,
+% \csintro\KnowledgeDeclareDocumentMathCommand,
+% \csintro\KnowledgeDeclareDocumentTextCommand,
+% \csintro\knowledgenewcommandPIE,
+% \csintro\knowledgerenewcommandPIE,
+% \csintro\knowledgedeclarecommandPIE,
+% \csintro\knowledgenewmathcommandPIE,
+% \csintro\knowledgerenewmathcommandPIE,
+% \csintro\knowledgedeclaremathcommandPIE,
+% \csintro\KnowledgeNewDocumentCommandPIE,
+% \csintro\KnowledgeRenewDocumentCommandPIE,
+% \csintro\KnowledgeDeclareDocumentCommandPIE,
+% \csintro\KnowledgeProvideDocumentCommandPIE,
+% \csintro\KnowledgeNewDocumentMathCommandPIE,
+% \csintro\KnowledgeRenewDocumentMathCommandPIE,
+% \csintro\KnowledgeDeclareDocumentMathCommandPIE, and
+% \csintro\KnowledgeProvideDocumentMathCommandPIE).
+%    \begin{macrocode}
+\KnowledgifyNewcommand\declarecommand
+\KnowledgifyNewcommand\newmathcommand
+\KnowledgifyNewcommand\newtextcommand
+\KnowledgifyNewcommand\renewmathcommand
+\KnowledgifyNewcommand\renewtextcommand
+\KnowledgifyNewcommand\declaremathcommand
+\KnowledgifyNewcommand\declaretextcommand
+\KnowledgifyNewDocumentCommand\NewDocumentMathCommand
+\KnowledgifyNewDocumentCommand\NewDocumentTextCommand
+\KnowledgifyNewDocumentCommand\RenewDocumentMathCommand
+\KnowledgifyNewDocumentCommand\RenewDocumentTextCommand
+\KnowledgifyNewDocumentCommand\ProvideDocumentMathCommand
+\KnowledgifyNewDocumentCommand\ProvideDocumentTextCommand
+\KnowledgifyNewDocumentCommand\DeclareDocumentMathCommand
+\KnowledgifyNewDocumentCommand\DeclareDocumentTextCommand
+\KnowledgifyNewcommand\newcommandPIE
+\KnowledgifyNewcommand\renewcommandPIE
+\KnowledgifyNewcommand\declarecommandPIE
+\KnowledgifyNewcommand\newmathcommandPIE
+\KnowledgifyNewcommand\renewmathcommandPIE
+\KnowledgifyNewcommand\declaremathcommandPIE
+\KnowledgifyNewDocumentCommand\NewDocumentCommandPIE
+\KnowledgifyNewDocumentCommand\RenewDocumentCommandPIE
+\KnowledgifyNewDocumentCommand\DeclareDocumentCommandPIE
+\KnowledgifyNewDocumentCommand\ProvideDocumentCommandPIE
+\KnowledgifyNewDocumentCommand\NewDocumentMathCommandPIE
+\KnowledgifyNewDocumentCommand\RenewDocumentMathCommandPIE
+\KnowledgifyNewDocumentCommand\DeclareDocumentMathCommandPIE
+\KnowledgifyNewDocumentCommand\ProvideDocumentMathCommandPIE
 %    \end{macrocode}
-%
-%
-%
 % \subsection{Subpackages}
 %
 % \subsubsection{Generalities}
@@ -3791,9 +3971,8 @@ This directory contains the package
 %    \begin{macrocode}
 \NewKnowledgeParamTl*{url}
 \NewKnowledgeParamTl*{ref}
-
 \knowledge_directives_require_aci_package:nn
-   {url,ref,autoref}{hyperref}
+   {url}{hyperref}
 %    \end{macrocode}
 % The commands \cs{\intro}, \cs{\kl} and \cs{\reintro} are made silent when
 % creating the pdf names of sections (for avoiding warnings of the "hyperref@@package").
@@ -3826,6 +4005,24 @@ This directory contains the package
 %          \expandafter\tl_to_str:n\expandafter{\knowledge_kl_index_tl}
 %         }}}}
 %}
+%    \end{macrocode}
+%    \begin{macrocode}
+\cs_new:Nn\knowledge_kl_compute_code_makeidx:{
+  \bool_if:NF\knowledge_kl_noindex_bool{
+     \tl_if_exist_ne:NTF\knowledge_kl_index_tl
+         {\exp_args:Nx\index
+            {\tl_if_exist_ne:NTF\knowledge_kl_index_parent_key_tl
+                    {\exp_not:V\knowledge_kl_index_parent_key_tl!}{}
+              \tl_if_exist_ne:NTF\knowledge_kl_index_key_tl
+                    {\exp_not:V\knowledge_kl_index_key_tl@}{}
+              \expandafter\tl_to_str:n\expandafter{\knowledge_kl_index_tl}
+              \tl_if_exist_ne:NTF\knowledge_kl_index_number_style_tl
+                    {|\exp_not:V\knowledge_kl_index_number_style_tl}{}
+            }}{}
+      }
+}
+%    \end{macrocode}
+%    \begin{macrocode}
 \def\knowledgeIntroIndexStyle#1{\textbf{#1}}
 \NewKnowledgeParamTl{index}
 \keys_define:nn { knowledge~directives } 
@@ -3839,6 +4036,90 @@ This directory contains the package
 \NewKnowledgeParamTl*[\knowledge_kl_index_number_style_tl]{index~style}
 \NewKnowledgeParamTl*[\knowledge_kl_index_parent_key_tl]{index~parent~key}
 \NewKnowledgeParamTl*[\knowledge_kl_index_key_tl]{index~key}
+\NewKnowledgeParamBool*{no~index}\knowledge_kl_noindex_bool
+%    \end{macrocode}
+%
+% \subsubsection{The \kl{cleveref option}}
+%
+%    \begin{macrocode}
+\bool_if:NTF\knowledge_cleveref_active_bool{
+ \knowledgenewvariant\kcref{
+  namespace=default,
+  unknown~style={kl~unknown,ref~unknown},
+  unknown~style~cont={kl~unknown~cont,ref~unknown},
+  default~style=autoref~link,
+  display~code={\knowledgedisplayref\cref}
+ }
+ \knowledgenewvariant\kCref{
+  namespace=default,
+  unknown~style={kl~unknown,ref~unknown},
+  unknown~style~cont={kl~unknown~cont,ref~unknown},
+  default~style=autoref~link,
+  display~code={\knowledgedisplayref\Cref}
+ }
+ \knowledgenewvariant\kcpageref{
+  namespace=default,
+  unknown~style={kl~unknown,ref~unknown},
+  unknown~style~cont={kl~unknown~cont,ref~unknown},
+  default~style=autoref~link,
+  display~code={\knowledgedisplayref\cpageref}
+ }
+ \knowledgenewvariant\kCpageref{
+  namespace=default,
+  unknown~style={kl~unknown,ref~unknown},
+  unknown~style~cont={kl~unknown~cont,ref~unknown},
+  default~style=autoref~link,
+  display~code={\knowledgedisplayref\Cpageref}
+ }
+ \knowledgenewvariant\knamecref{
+  namespace=default,
+  unknown~style={kl~unknown,ref~unknown},
+  unknown~style~cont={kl~unknown~cont,ref~unknown},
+  default~style=autoref~link,
+  display~code={\knowledgedisplayref\namecref}
+ }
+ \knowledgenewvariant\knameCref{
+  namespace=default,
+  unknown~style={kl~unknown,ref~unknown},
+  unknown~style~cont={kl~unknown~cont,ref~unknown},
+  default~style=autoref~link,
+  display~code={\knowledgedisplayref\nameCref}
+ }
+ \knowledgenewvariant\knamecrefs{
+  namespace=default,
+  unknown~style={kl~unknown,ref~unknown},
+  unknown~style~cont={kl~unknown~cont,ref~unknown},
+  default~style=autoref~link,
+  display~code={\knowledgedisplayref\namecrefs}
+ }
+ \knowledgenewvariant\knameCrefs{
+  namespace=default,
+  unknown~style={kl~unknown,ref~unknown},
+  unknown~style~cont={kl~unknown~cont,ref~unknown},
+  default~style=autoref~link,
+  display~code={\knowledgedisplayref\nameCrefs}
+ }
+ \knowledgevariantmodifier{\kcref*\kl}{\kcref}
+ \knowledgevariantmodifier{\kCref*\kl}{\kCref}
+ \knowledgevariantmodifier{\kcpageref*\kl}{\kcpageref}
+ \knowledgevariantmodifier{\kCpageref*\kl}{\kCpageref}
+ \knowledgevariantmodifier{\knamecref*\kl}{\knamecref}
+ \knowledgevariantmodifier{\knameCref*\kl}{\knameCref}
+ \knowledgevariantmodifier{\knamecrefs*\kl}{\knamecrefs}
+ \knowledgevariantmodifier{\knameCrefs*\kl}{\knameCrefs}
+}{
+  \cs_new:Nn\knowledge_cleveref_error:N{
+     \newcommand#1{\knowledge_error:n{Use~package~'cleveref'~for~command~#1.}}
+  }
+  \knowledge_cleveref_error:N\kcref
+  \knowledge_cleveref_error:N\kCref
+  \knowledge_cleveref_error:N\kcpageref
+  \knowledge_cleveref_error:N\kCpageref
+  \knowledge_cleveref_error:N\knamecref
+  \knowledge_cleveref_error:N\knameCref
+  \knowledge_cleveref_error:N\knamecrefs
+  \knowledge_cleveref_error:N\knameCrefs
+}
 %    \end{macrocode}
 %
 % \subsection{Fixes}
@@ -3989,8 +4270,23 @@ This directory contains the package
   unknown style cont=intro unknown cont,
   style directive=intro style
 }
-
-  
+\knowledgestyle{ref unknown}{text=??}
+\knowledgenewvariant\kref{
+  namespace=default,
+  unknown style={kl unknown,ref unknown},
+  unknown style cont={kl unknown cont,ref unknown},
+  default style=autoref link,
+  display code={\knowledgedisplayref\ref}
+}
+\knowledgenewvariant\kpageref{
+   namespace=default,
+    unknown style={kl unknown,ref unknown},
+    unknown style cont={kl unknown cont,ref unknown},
+    default style=autoref link,
+   display code={\knowledgedisplayref\pageref}
+}
+\knowledgevariantmodifier{\kref*\kl}{\kref}
+\knowledgevariantmodifier{\kpageref*\kl}{\kpageref}
 \knowledgevariantmodifier{\intro*\kl}{\intro}
 \knowledgevariantmodifier{\reintro*\kl}{\reintro}
 
diff --git a/macros/latex/contrib/knowledge/knowledge.pdf b/macros/latex/contrib/knowledge/knowledge.pdf
index 4afd478edc..3937cecefa 100644
--- a/macros/latex/contrib/knowledge/knowledge.pdf
+++ b/macros/latex/contrib/knowledge/knowledge.pdf
diff --git a/macros/latex/contrib/knowledge/knowledge.tex b/macros/latex/contrib/knowledge/knowledge.tex
index ba4b94a598..b0d40485a8 100644
--- a/macros/latex/contrib/knowledge/knowledge.tex
+++ b/macros/latex/contrib/knowledge/knowledge.tex
@@ -5,6 +5,7 @@
 \usepackage[svgnames]{xcolor}
 \usepackage{expl3}
 \usepackage{hyperref}
+\usepackage{cleveref}
 %\usepackage{complexity}
 \usepackage[quotation,scope,silent]{knowledge}
 \knowledgeconfigure{visible anchor points=false}
@@ -128,7 +129,9 @@
   unknown warning=false,
   unknown diagnose=true,
   suggestion=cs,
-  PDF string={\detokenize{#1}}}
+  PDF string={\detokenize{#1}}
+}
+  
 \knowledgestyle{cs}{wrap=\Robustdisplay,typewriter,up,md,color=NavyBlue}
 \knowledgestyle{cs unknown}{wrap=\Robustdisplay,typewriter,up,md,color=black}
 
@@ -292,11 +295,13 @@
 \knowledge{link scope=}{directive}
 \knowledge{style=}{directive}
 \knowledge{intro style=}{directive}
+\knowledge{no index}[no index=]{directive}
 \knowledge{wrap=}{directive}
 \knowledge{scope=}{directive}
 \knowledge{export=}[export]{directive}
 \knowledge{now}{directive}
-
+\knowledge{directive}
+  | automatic in command
 
 \knowledge{protect link}{directive}
 \knowledge{strict}{directive}
@@ -347,6 +352,7 @@
   \knowledge{hyperref}{option}
   \knowledge{xcolor}{option}
   \knowledge{makeidx}{option}
+  \knowledge{cleveref}{option}
   \knowledge{scope}{option}
   \knowledge{quotation}[quotation=]{option}
   \knowledge{notion}{option}
@@ -354,6 +360,7 @@
 \end{scope}
 \knowledge{hyperref option}{link=hyperref,link scope=option}
 \knowledge{makeidx option}{link=makeidx,link scope=option}
+\knowledge{cleveref option}{link=cleveref,link scope=option}
 \knowledge{scope option}{link=scope,link scope=option}
 \knowledge{xcolor option}{link=xcolor,link scope=option}
 \knowledge{notion option}{link=notion,link scope=option}
@@ -361,6 +368,9 @@
 
 
 \knowledge{visible anchor points}[visible AP|visible AP=|visible anchor points=]{option}
+\knowledge{anchor point shape}[anchor point shape=|AP shape=|AP shape]{option}
+\knowledge{anchor point color}[anchor point color=|AP color=|AP color]{option}
+\knowledge{anchor point shift}[anchor point shift=|AP shift=|AP shift]{option}
 \knowledge{protect quotation}[protect quotation=]{option}
 \knowledge{protect link co}{option,text=protect link}
 \knowledge{unprotect link co}{option,text=unprotect link}
@@ -397,6 +407,7 @@
    \knowledge{standalone}{package,url={https://www.ctan.org/pkg/standalone}}
    \knowledge{xcolor}{package,url={https://www.ctan.org/pkg/xcolor}}
    \knowledge{makeidx}{package,url={https://www.ctan.org/pkg/makeidx}}
+   \knowledge{cleveref}{package,url={https://www.ctan.org/pkg/cleveref}}
    \knowledge{etoolbox}{package,url={https://www.ctan.org/pkg/etoolbox}}
    \knowledge{xparse}{package,url={https://www.ctan.org/pkg/xparse}}
    \knowledge{amsmath}{package,url={https://www.ctan.org/pkg/amsmath}}
@@ -404,6 +415,8 @@
    \knowledge{mathcommand}{package,url={https://www.ctan.org/pkg/mathcommand}}
 \end{scope}
 
+\knowledge{arXiv}{package,url={https://arxiv.org/}}
+
 
 \knowledgedirective{environment}{typewriter}
 \begin{scope}\label{env}
@@ -414,6 +427,7 @@
    \knowledge{tikzcd}{environment,ref=section:tikzcd}
    \knowledge{thebibliography}{environment,ref=section:thebibliography}
    \knowledge{document}{environment}
+   \knowledge{picture}{environment}
 \end{scope}
 
 \knowledge{variant directives}[variant directive|Variant directives]{doc notion}
@@ -428,6 +442,7 @@
   \knowledge {unknown warning=}{directive}
   \knowledge {unknown diagnose=}{directive}
   \knowledge {suggestion=}{directive}
+  \knowledge {display code=}{directive}
   \knowledge {PDF string=}{directive}
   \knowledge {stared sequence}{doc notion}
   \knowledge {modifier}[modifiers|Modifiers]{doc notion}
@@ -440,7 +455,7 @@
 
 \knowledge{label}{}
 
-\knowledge{variant of \cs{\kl}}[variants of \cs{\kl}|Variants of \cs{\kl}]{doc notion}
+\knowledge{variant of \cs{\kl}}[variants of \cs{\kl}|Variants of \cs{\kl}|variants|variant]{doc notion}
 \knowledge{scoping}[Scoping]{doc notion}
 \knowledge{package option}[package options|Package options]{doc notion}
 \knowledge{configuration option}[configuration options|Configuration options]{link=package option}
@@ -610,8 +625,8 @@
 \maketitle
 
 \begin{abstract}\phantomintro(package){knowledge}%
-The "knowledge@@package" package offers commands and notations for handling semantical notions in a (scientific) document.
-This allows to link the use of a notion to its definition, to add it to the index automatically, etc.
+The "knowledge@@package" package offers commands and notations for handling semantical notions in a document.
+This allows to easily  link the use of a notion to its definition, to add it to the index automatically, etc.
 \end{abstract}
 
 \ifcodeTF{\begin{quote}This version of the documentation includes a good part of the code. A casual user should \textit{a priori} not use this version of the documentation.\end{quote}}{}
@@ -753,8 +768,13 @@ I have seen Till Tantau who explained me how to test whether a material is displ
 \item[2020-03-05] Now \texttt{hidelinks} and \texttt{breaklinks} are automatically activated unless the new option \kl{no patch} is activated. Doc update. V1.22 on CTAN.
 \item[2020-04-25] Made the package compatible with 2016 versions of LaTeX. Useful when \texttt{knowledge.sty} is included with and compile in arXiv. V1.23 on CTAN.
 \item[2020-05-02] Doc update ("acmart@@package" colors, thanks to Daniela Petri\c san).
-\item[2020-09-22] Adding the "silent" option as suggested by Patrick Lambein-Monette. V1.24 on CTAN
-\item[2021-03-31] Correcting a bug caused by a change of semantics in "expl3@@package". V1.25 on CTAN
+\item[2020-09-22] Adding the "silent" option as suggested by Patrick Lambein-Monette. V1.24.
+\item[2021-03-31] Correcting a bug caused by a change of semantics in "expl3@@package". V1.25.
+\item[2021-05-25] Added the \cs\kref, \cs\kpageref, \cs\kcref, and \cs\kCref\ commands a suggested by Ziv Scully.
+\item[2021-05-26] Corrected wrongly used default parameter in \cs\knowledgedirective.
+\item[2021-05-27] The explicit text given in a \cs\kl-command now overrides the "text=" directive. 
+\item[2021-07-18] Adding the "no index" directive. 
+\item[2021-12-20] Adding options "anchor point shape", "anchor point color", "anchor point shift" (rom request of Rémi Morvan). 
 \end{compactdesc}
 \normalsize
 %\restoregeometry
@@ -902,7 +922,7 @@ makes it possible to use the notions in many contexts:
 In the above code all quoted parts send the reader to the same wikipedia page about groups.
 Note in particular that \smallcode{\kl"morphism@@GROUP\kl"} simply displays `morphism' at compilation.
 The \smallcode{GROUP} part is a "scope".
-In another part of the document, \smallcode{\kl"morphism@@RING\kl"} can be safely using while using an unspecialised \smallcode{\kl"morphism\kl"} would become quickly unmanageable.
+In another part of the document, \smallcode{\kl"morphism@@RING\kl"} can be safely used whereas using an generic \smallcode{\kl"morphism\kl"} would become quickly unmanageable.
 
 
 
@@ -1032,6 +1052,15 @@ These \kl(ex1)[semigroup]{algebraic objects} \kl{[...]}
 \end{PDFoutput}\noindent
 The term is properly linked to the definition of semigroups.
 
+Another possibility is to refer to the location of the definition, using commands \cs\kref, \cs\kpageref, and even better their improvements \cs\kcref, \cs\kCref, etc (when using the "cleveref@@option" package). For instance,
+\begin{code}
+\kl"Semigroups\kl" are introduced in \cs\kCref\{semigroup\},\\ Page~\cs\kpageref\{semigroup\}.
+\end{code}
+\noindent yields:
+\begin{PDFoutput}[10cm]
+  \kl(ex1)[semigroups]{Semigroups} are introduced in \kCref(ex1){semigroups},
+  Page~\kpageref(ex1){semigroups}.
+\end{PDFoutput}
 Finally, in particular for large documents, it is good to have an "index". For this,
 one should load the package "makeidx@@package" before "knowledge@@package".
 Then use it normally: putting \cs{\makeindex} in the preamble and \cs{\printindex} at the end of the document. 
@@ -1047,9 +1076,9 @@ Finally, the \cs{knowledge} commands are adapted in a straightforward manner:
 \indent~~~\klbn|~~morphism@SG\\
 \indent~~~\klbn|~~morphisms@SG
 \end{code}\noindent
-Now, the index (after running \texttt{makeidx}) contains all entries and references to the use of semigroups and semigroup morphisms.
+Now, the index (after running \texttt{makeindex}) contains all entries and references to the use of semigroups and semigroup morphisms.
 
-See Section~\ref{subsection:makeidx option} for more details on making an index.
+See \kCref(option){makeidx} for more details on making an index.
 %
 %\subsection{Managing an index}
 %Though it is not its primary goal, without using its hyperlinking capabilities, the "knowledge@@package" offers convenient features for easily managing data for the construction of an index. 
@@ -1060,33 +1089,17 @@ See Section~\ref{subsection:makeidx option} for more details on making an index.
 \subsection{Mathematics}
 \label{subsection:mathematics scenario}
 
-The examples above show various techniques for using \kl{knowledges} for enhancing the information associated to terms. In fact, these techniques are not incompatible with mathematics. Imagine, for instance that you would like each time a macro \kl[@token]{\monoid} is met, to display $\mathcal M$, you would do for instance:
-\begin{code}[7cm]
-\cs\newrobustcmd\kl[@token]\monoid\{\cs\mathcal\ M\}
-\end{code}\noindent
-Imagine that furthermore, you would like to hyperlink to the definition of a monoid. A standard \cs{\kl} command does the job\footnote{It is highly advised to not use the "quotation notation" in math mode or macros.}:
-%
-\marginpar{%
-  \begin{hint}
-      Defining new macros is best done using \cs{\newrobustcmd}
-      (of the "etoolbox@@package" package), rather than \cs{\newcommand} as usual in \LaTeX.
-      This remark is general independently of the use of "knowledge@@package".
-   \end{hint}
-   \begin{hint}
-   		The package "mathcommand@@package" offers severals capabilities for redefining commands for math mode.
-		See Section~\ref{subsubsection:mathcommand} for more.
-   \end{hint}}
-%
+The examples above show various techniques for using \kl{knowledges} for enhancing the information associated to terms. In fact, these techniques are not incompatible with mathematics. Some special syntax is even offered:
 \begin{code}[9cm]
-\cs\newrobustcmd\kl[@token]\monoid\{\cs\kl
-monoid]\{\cs\mathcal\ M\}\}\\~
-What is \$\kl[@token]\monoid\$ ?
+\cs\knowledgenewrobustcmd\cs\closure[1]\{\cs\cmdkl\{\cs\langle\}\#1\cs\cmdkl\{\cs\rangle\}\}\}\\
+{[...]}\\
+The closure of~\$X\$ under product is denoted~\$\cs\intro*\cs\closure\{X\}\$
 \end{code}\noindent
 \noindent
 would yield:
 \begin{PDFoutput}[4cm]
-\newcommand \monoid{\kl[monoid]{\mathcal M}}
-What is $\monoid$ ?
+\knowledgenewrobustcmd \monoid{\cmdkl{\mathcal M}}
+A monoid is  $\monoid$ !
 \end{PDFoutput}
 \begin{problem}
 But I want more. I want to be able to introduce variables.
@@ -1364,6 +1377,9 @@ A certain number of Boolean directives are available without any options. These
 (that leaves it in the default state, or the one determined by surrounding knowledges).
 The general boolean \kl[\knowledge directives]{directives} are the following:
 \begin{description}
+\itemAP[\kl{autoref}] activates the ability to introduce once, use several times an instance. This is often used for defining links inside a document (see the "hyperref@@option" in \kCref*"hyperref@@option"). This can also be used for constructing the index (see the "makeidx@@option" in \kCref*"makeidx@@option"). It can simply be used for referencing the number of the environment or the proper page of introduction (see \cs\kref\ and \cs\kpageref\ commands and their more powerful "cleveref@@option" in \kCref*"cleveref@@option").
+\itemAP[\kl{autorefhere}] puts immediately a label at the location of the definition, and makes all \cs{\kl} occurrences of this \kl{knowledge}
+hyperlink to this location.
 \itemAP[\intro{emphasize}] forces the text to be emphasized using `\cs{\emph}',
 \itemAP[\intro{italic}/\intro{up}] forces/unforces italic ("up" does nothing in math mode),
 \itemAP[\intro{boldface}/\intro{md}] forces/unforces boldface (be it in math or text mode),
@@ -1451,12 +1467,12 @@ A certain number of \intro{default styles} are also offered, that in particular
 \label{subsubsection:macro directives}
 
 When defining \kl{knowledges}, it is often the case that the same 
-sequence of directives are used. \intro{Macro directives} are here for simplifying this situation (see also \cs{\knowledgedefault} and \cs{\knowledgestyle}). This is achieved using the \cs{\knowledgedirective} directive:
+sequence of directives are used. \intro{Macro directives} are here for simplifying this situation (see also \cs{\knowledgedefault} and \cs{\knowledgestyle}). This is achieved using the \cs{\knowledgedirective} macro:
 \marginpar{\begin{hint} This should not be confused with \kl{styles} which offer another way to control the display.\end{hint}}
 \begin{center}
  \smallcode{\csintro{\knowledgedirective}*\{name\}[optional parameter]\{directives\}}
 \end{center}
-After such a command has been issued, `name' becomes a \kl[\knowledge directives]{directive}
+After execution of the command, `name' becomes a \kl[\knowledge directives]{directive}
 usable in \cs{\knowledge} commands, that amounts to execute the comma separated list `directives'. The newly created \kl[\knowledge directives]{directive} may receive a value, that is accessible as \texttt{\#1} in `directives'. By default, it does not allow the redefinition of a directive. This can be forced using the optional \texttt*.  The `optional parameter' gives
 a default value. For instance:
 \begin{code}
@@ -1518,9 +1534,12 @@ The optional star does not reset the \kl{default directives} but simply add new
 
 
 
-\subsection{The \cs{\kl} command}
+\subsection{The \cs{\kl} command and variants}
 \label{subsection:kl command}
 
+The \cs\kl\ command is used for displaying a knowledge in the text, while using the data associated to it
+(introducing a target link, linking to its definition, linking to an outer document, changing color, putting an entry in the index, etc).
+
 \subsubsection{The standard syntax}
 
 \marginpar{\begin{hint} Note that the \cs{\kl} command can often be replaced by the
@@ -1535,20 +1554,19 @@ or\quad&
 \smallcode{\csreintro{\kl}[\kl[knowledge name]{optional knowledge name}](\kl[klab]{optional scope})\{text\}}\ .
 \end{tabular}
 \end{center}
-Its meaning is to search for the `optional knowledge name' if present, or for `text' otherwise. How this is exactly performed depends on the presence of the \kl[klab]{optional label}.
+Its meaning is to search for the `optional knowledge name' if present, or for `text' otherwise. How this is exactly performed depends on the presence of the \kl[klab]{optional scope}.
 The search process is as follows:
 \begin{asparaitem}
-\itemAP if an \intro[klab]{optional label} is given, the \kl{knowledge} is searched in the corresponding scope.
+\itemAP if an \intro[klab]{optional scope} is given, the \kl{knowledge} is searched in the corresponding scope.
 \itemAP otherwise, the \kl{stack of visible scope instances} is processed through (starting from the inner most)
-  until a \kl{knowledge} of name `\kl{knowledge name}' or `text', of \kl{namespace} `default' and this \kl{scope}
-  is found.
+  until a \kl{knowledge} of name `\kl{knowledge name}' (or `text' if not optional \kl{knowledge name} has been given), of \kl{namespace} `default', and this \kl{scope} is found.
   
   If the `knowledge name/text' has not been found, the \kl{style} `"kl unknown@@style"' (or similar "styles", as defined by the "unknown style=@@variant" or "unknown style cont=@@variant") is used, and the
   text displayed. 
 \item Otherwise, the \kl{knowledge} is executed. If it is a \kl{link=} or \kl{synonym} defined \kl{knowledge}, the link is followed, and the process continues.
 \item Finally, all the definitions involved in the \kl{knowledge} are processed, following a  \kl{style=} if defined, the \kl{knowledge} is updated (essentially incrementing the counter of use), and the \kl{knowledge} is displayed.
 \end{asparaitem}
-This general mechanism is used also by other commands that are variations around \cs{\kl} such as in particular \cs{\intro}.
+This general mechanism is used also by other commands that are "variants of \cs{\kl}" such as \cs{\intro}, \cs{\reintro}, \cs{\kref}, \cs{\kpageref}, and so on.
 
 
 \subsubsection{The  "quotation notation"}
@@ -1602,7 +1620,22 @@ There are nevertheless some situations in which one would prefer to use the orig
 
 
 
-\subsubsection{\kl{Variants of \cs{\kl}}, \cs{\knowledgenewvariant}, \cs{\knowledgevariantmodifier} }
+\subsubsection{\kl{Variants of \cs{\kl}}}
+Several variants of the \cs\kl-command are defined by default. The syntax for their use is the same (including "scopes", \dots).
+The following variants are linked to the "autoref" directive:
+\begin{itemize}
+\item \cs\intro\ is used to introduce a knowledge.
+\item \cs\reintro\ displays like for introducing the knowledge, but does not do it.
+\item \cs\rekl\ behaves like \cs\kl\ acts as a modifier and transforms \cs\intro\ into \cs\reintro.
+\item \cs\phantomintro\ performs the introduction, but does display anything.
+\itemAP \csintro\kref\ displays the number of the environment in which the introduction took place.
+\itemAP \csintro\kpageref\ displays the number of the page in which the knowledge introduction took place.
+\item \csintro\kcref, \csintro\kCref, \csintro\kcpageref, \csintro\kCpageref, \csintro\knamecref, \csintro\knameCref,
+\csintro\knamerefs, and \csintro\knameCrefs, display informations about the place of introduction of a "knowledge",
+following the semantics of the corresponding functions in the "cleveref@@package" package (see \kCref*"cleveref@@option").
+\end{itemize}
+
+\subsubsection{Defining your own \kl{variants of \cs{\kl}}}
 \label{subsubsection:variants}
 \phantomintro{variant of \cs{\kl}}%
 It may happen for several reasons that we may want to define new variants of the \cs{\kl} macros, that essentially perform the same task, but are configured differently. Typical examples may be:
@@ -1639,6 +1672,7 @@ These command define/modify a/the macro \cs{\variant} that uses the same syntax
 \itemAP[""suggestion=@@variant""\{directives\}] configures the "directives" to be suggested in the "diagnose file"
 when the "knowledge" is unknown.
 \itemAP[""PDF string=@@variant""\{code\}] gives a substitute text for "hyperref@@package" to use for producing the bookmarks. This code has to be expandable. The code may use three parameters; $\sharp1$ is the main text of the command, $\sharp 2$ is the optional parameter, and $\sharp 3$ is the scope. The macro \cs{\IfNoValueTF} of the package "xparse@@package" can be used to test if the second and third arguments are present. By default, the code is \texttt{\{$\sharp1$\}}. Note that the star syntax cannot be used in this context. It the expected result cannot be achieved using this directive, the less convenient macro \cs{\texorpdfstring} of the "hyperref@@package" package should be used.
+\item[""display code=@@variant""] can be used to shortcut the standard code for display. See the code for more details. Typical examples are the "variants" \cs\kref,\ \cs\kpageref\ and so on, which do not display the knowledge itself, but instead treat the underlying label associated.
 \end{compactdesc}
 \smallskip
 
@@ -1686,13 +1720,14 @@ Note that \cs{\reintro} and \cs{\phantomintro} are defined using similar code.
 \AP The second code example is used in this document (the documentation of the package) and consists of two macros \csintro{\cs} and \csintro{\csintro} which have the
 following semantics:
 \begin{itemize}
-\item these have the same syntax as \cs{\kl} and \cs{\intro} respectively.
-\item these are used to display control sequences without executing it,
-\item if \cs{\csintro} is never used, it appears in black,
-\item is \cs{\csintro} is used, then it is in color blue, and the calls to \cs{\cs}
-    are in dark blue, and furthermore, the \cs{\cs} calls possess an hyperlink to
-    the call to \cs{\csintro}.
-\item no \cs{\knowledge} command is necessary, and no warnings are issued.
+\item these correspond, and have the same syntax as, \cs{\kl} and \cs{\intro} respectively,
+\item these are used to display control sequences without executing them,
+\itemAP if \smallcode{\cs{\csintro}\{\cs[\ucommand]\command\}} is used, then it displays \csintro\command\ in color blue, and 
+	every occurrences of \smallcode{\cs\cs\{\cs\command\}} yields \cs\command\ being displayed in dark blue
+	and linking to the introduction point,
+\item if \smallcode{\cs\csintro\{\cs[\ucommand]\command\}} is never used,
+		then \smallcode{\cs\cs\{\cs[\ucommand]\command\}} simply displays \cs[\ucommand]\command\  in black,
+\item no \cs{\knowledge} command is necessary, and no warning is issued if a command is unknown.
 \end{itemize}
 \begin{code}
 \cs\knowledgestyle\{cs\}\par
@@ -1715,14 +1750,12 @@ following semantics:
 \cs\knowledgenewvariant\cs\csintro\{\par
 ~~~~"namespace=@@variant"cs,\par
 ~~~~"auto knowledge=@@variant"\{"autoref","scope="document,"also now"\},\par
-~~~~"default style=@@variant"\{autoref target,csintro\},\par
+~~~~"default style=@@variant"\{"autoref target",csintro\},\par
 ~~~~"unknown style=@@variant"csintro unknown,\par
 ~~~~"unknown style cont=@@variant"csintro unknown,\par
 \}\par
 \cs\knowledgevariantmodifier\{\cs{\intro*}\cs\cs\}\cs\csintro\par
 \cs\knowledgevariantmodifier\{\cs\csintro*\cs\cs\}\cs\csintro\par
-\cs\knowledgevariantmodifier\{\cs\cs*\cs\kl\}\cs\cs\par
-\cs\knowledgevariantmodifier\{\cs\csintro*\cs\kl\}\cs\csintro
 \end{code}
 Several things can be noted about this code:
 \begin{asparaitem}
@@ -1732,7 +1765,7 @@ Several things can be noted about this code:
 \item when a \cs{\csintro} command is met, the corresponding \cs{\knowledge} command is automatically issued, in particular with `"scope="document' for guaranteeing the visibility of each command everywhere in the document,
 \item the "also now" directive is necessary for the compilation to (possibly) stabilize in
   two iterations, since it uses the proper \cs{\label} already at the first iteration (without "also now", it would be performed on the second one only, and with just "now", it would be visible only by the uses after the introduction).
-\item warnings and diagnose information is explicitly eliminated.
+\item warnings and diagnose pieces of information are explicitly eliminated.
 \end{asparaitem}
 
 
@@ -1754,10 +1787,10 @@ the "quotation notation":
 \begin{tabular}{ccc}
   \smallcode{\cs\kl(scope name)\{knowledge\}}%
       &~or~&%
-   \smallcode{\cs\kl(scope name)[knowledge]\{displayed text\}}\\
+   \smallcode{\cs\kl(scope name)[knowledge]\{text\}}\\
    \smallcode{\klqn"knowledge\klqn{@@}scope\klqn"}%
       &~or~&%
-    \smallcode{\klqn"displayed text\klqn@knowledge\klqn@scope\klqn"}
+    \smallcode{\klqn"text\klqn@knowledge\klqn@scope\klqn"}
     \end{tabular}
 \end{center}
 It works also for \cs{\intro} and with double quotes.
@@ -1823,12 +1856,12 @@ This is convenient, in particular for having synonyms in different scopes:
 Here, general \klqn"groups\klqn" are not defined but \klqn"groups\klqn{@@}abelian\klqn" are,\\
 and correspond to \klqn"abelian groups\klqn".\\
 \cs\begin\{"scope@@env"\}\cs\knowledgeimport\{abelian\}\\
-\indent~~Her, all \klqn"groups\klqn" here are abelian.\\
+\indent~~All \klqn"groups\klqn" here are abelian.\\
 \cs\end\{"scope@@env"\}
 \end{code}
 
 
-"Scopes" can also be attached to areas in the code. It is convenient to use the usual \cs{\label} command to name them (though a priori two different spaces of naming are used).
+"Scopes" can also be attached to areas in the code. It is convenient to use the usual \cs{\label} command to name them (though, in practive,  two different naming spaces are used).
 \begin{code}
 \textcolor{gray}{\% We declare first in the preamble the environments that can have}\\
 \textcolor{gray}{\% knowledges attached to them.}\\
@@ -1963,7 +1996,7 @@ For instance:
  \noindent
  will induce the corresponding environments to have internal knowledges.
  
-Most of the times, it is not necessary to use "scope directives".
+Most of the time, it is not necessary to use "scope directives".
  
 \begin{remark}
 Note that (in the current implementation) it is necessary to use the
@@ -1977,10 +2010,11 @@ commands \cs{\begin} and \cs{\end}. Hence \cs{\proof}\dots\cs{\endproof} would
 \itemAP[\intro(area){scope=}\texttt{true/false}] tells whether an environment should induce a scope. For the moment, this is not used (as soon as configured, it always behaves like a scope).
  \itemAP[\intro(area){label=}\texttt{none/accepts}] tells whether a \cs{\label} command can refer to an "instance" of this "area",
  \itemAP[\intro(area){environment=}\texttt{true/false}] should be set to true if the scope has to be opened whenever an environment of same name is opened using the \cs{\begin} and \cs{\end} commands of "latex".
- \itemAP[\intro(area){autoclose=}\texttt{true/false}] means that the closure is triggered by another event (closure of another enclosing instance, or pushing of an area that requires its closure). It should be true for "latex" environments, and false when configuring, e.g, \cs{\section} to open an "scope" (since the end of the section is automatic: when another section is opened, or some higher level sectioning command).
- \itemAP[\intro(area){parents=}\{"area1@area","area2@area",\dots\}] takes a comma separated list of areas that are allowed as parent. For opening the area, some enclosing instances may be automatically closed for reaching such a parent (if their "autoclose=@@area" "directive@scope directive" is set to true).
- \itemAP[\intro(area){push code=}\texttt{\{code\}}] defines the code to be executed when the area is pushed (each time, these are added).
- \itemAP[\intro(area){pop code=}\texttt{\{code\}}] defines the code to be exected when the are is popped (added too).
+ \itemAP[\intro(area){autoclose=}\texttt{true/false}] means that the closure is triggered by another event (closure of another enclosing instance, or pushing of an area that requires its closure). It should be true for "latex" environments, and false when configuring, e.g, \cs{\section} opens a "scope" and its closure should be automatic when another section begins.
+ \itemAP[\intro(area){parents=}\{"area1@area","area2@area",\dots\}] takes a comma separated list of areas that are allowed as parent. For opening the area, some enclosing instances may be automatically closed for reaching such a parent (if their "autoclose=@@area" "directive@scope directive" is set to true). For instance, the parent of a subsection should be a section:
+ Hence when a subsection begins, the currently opened subsection and subsubsection are closed.
+ \itemAP[\intro(area){push code=}\texttt{\{code\}}] defines some code to be executed when the area is pushed (each time, these are added).
+ \itemAP[\intro(area){pop code=}\texttt{\{code\}}] defines some code to be executed when the area is popped (added too).
  \itemAP[\intro(area){occurrences=}\texttt{once/multiple/recursive}] can be one of `\texttt{once}' if the area can only have one instance in the document, `\texttt{multiple}' if there can be several instances, but not nested, and `\texttt{recursive}', if there is no restriction.
  \itemAP[\intro(area){forces=}"area"] requires a specific area as an ancestor of this area. This ancestor is implicitly pushed if necessary. 
  \end{compactdesc}
@@ -1993,7 +2027,7 @@ By default, the "knowledge@@package" package tries to not stop the compilation u
 
 \AP
 Very often there is some \kl[undefined knowledge]{undefined knowledge}.
-Such \kl{knowledges} are displayed using "kl unknown@@style" and "kl unknown cont@@style")
+Such \kl{knowledges} are displayed using the "kl unknown@@style" and "kl unknown cont@@style")
 \kl{styles} when issued by \cs{\kl}; using "intro unknown@@style" and "intro unknown cont@@style" when issued by \cs{\intro}.
 The detail of the problems are then gathered in the \kl{diagnose file}.
 
@@ -2147,10 +2181,6 @@ deactivates or reactivates the links.
 \item[\intro{url=}]\texttt{\{url address\}} puts an hyperlink to an (external) url
 (the braces can be omitted when there is no comma).
    \marginpar{\begin{hint} You may have to use \texttt{$\backslash$\~} instead of \texttt{\~} in url's addresses.\end{hint}}
-\item[\kl{autoref}] activates the ability to introduce once, use several times an instance. This is very convenient when writing scientific documents with many notions. This is the basic directive activating
-the features of the \cs{\intro} command.
-\item[\kl{autorefhere}] puts immediately a label at the location of the definition, and makes all \cs{\kl} occurrences of this \kl{knowledge}
-hyperlink to this location.
 \end{description}
 
 \subsubsubsection{The \kl{autoref} directive}
@@ -2343,10 +2373,28 @@ and a \intro{unit2} to be
 One can check that the different knowledges are properly hyperlinked, and that precise targets are the one described by \cs{\AP} and \cs{\itemAP}. For helping debugging the \kl{anchor points}, these are by default made visible as (red)
 corners on output. When the "knowledge@@package" package is loaded with the \kl{paper} option
 this graphical help disappears. 
-This can also be desactivated using:\phantomintro{visible anchor points}
-  \begin{code}[9cm]
-  \cs\knowledgeconfigure\{\kl{visible anchor points=}false\}
-  \end{code}
+This can also be deactivated using:\phantomintro{visible anchor points}
+\begin{quote}
+  \smallcode{\cs\knowledgeconfigure\{\kl{visible anchor points=}false\}}.
+\end{quote}  
+\AP The color of "anchor points" can be changed using (in which colors are defined as in the package "xcolor@@package"):
+\begin{quote}
+	\smallcode{\cs\knowledgeconfigure\{""anchor point color=""color\}}, or \\
+	\smallcode{\cs\knowledgeconfigure\{""AP color=""color\}}.
+\end{quote}
+\AP The shape of "anchor points" can be changed using (in which shape can be one of
+	 \texttt{tiny corner},  \texttt{small corner}, \texttt{corner}, \texttt{large corner},
+	 \texttt{tiny cross},  \texttt{small cross}, \texttt{cross}, \texttt{large cross}, or some code to be used in the "picture@@env" environment):
+\begin{quote}
+	\smallcode{\cs\knowledgeconfigure\{""anchor point shape=""shape\}}, or \\
+	\smallcode{\cs\knowledgeconfigure\{""AP shape=""shape\}}.
+\end{quote}
+Finally, the "anchor points" reference point can be shifted, using:
+\begin{quote}
+	\smallcode{\cs\knowledgeconfigure\{""anchor point shift=""\{$x$,$y$\}}, or \\
+	\smallcode{\cs\knowledgeconfigure\{""AP shift=""\{$x$,$y$\}\}},
+\end{quote}\noindent
+in which $x$ and $y$ are by default in unit \texttt{em} (note the use of curly braces and of no parenthesis, which is mandatory).
 
 
 \subsubsection{The \kl{makeidx option}}
@@ -2373,7 +2421,36 @@ The following \kl[\knowledge directives]{directives} are to be used:
 \cs\def\cs\knowledgeIntroIndexStyle\#1\{\cs\fbox\{\#1\}\}
 \end{code}
 \end{description}
+\AP
+The "directive" ""no index"", deactivates the index feature for a knowledge. This is meant to be used in a "style".
+For instance
+\begin{code}
+\cs\knowledgedirective\{standard\}\par\noindent~~~~~
+    \{"autoref","style="standard,"intro style="intro standard\}\\
+\cs\knowledgestyle\{standard\}\{"no index"\}\\
+\cs\knowledgestyle\{intro standard\}\{"emphasize"\}\\
+
+\cs\knowledge\{test\}\{standard,"index=" test\}
+\end{code}\noindent
+result in that the introductions of `test' will be gathered in the index, but not the other uses.
 
+\subsubsection{The \kl{cleveref option}}
+
+The \intro(option){cleveref} option loads the "cleveref@@package" package and gives access to new commands:
+\csintro\kcref, \csintro\kCref, \csintro\kcpageref, \csintro\kCpageref, \csintro\knamecref, \csintro\knameCref,
+\csintro\knamerefs, and \csintro\knameCrefs\ which are respectively equivalent to \cs\cref, \cs\Cref, \cs\cpageref, \cs\Cpageref,
+\cs\namecref, and \cs\nameCref\ of the "cleveref@@package" package, but applied to the label corresponding to the "knowledge" (see the documentation of "cleveref@@package" for more details).
+These commands are variants of \cs\kl\ and hence are subject to the same syntax.
+
+For instance,
+\begin{code}
+	\kl{"}Anchor points\kl{"} have been described in~\cs\kCref\{anchor point\},\\
+	Page \cs\kpageref\{anchor point\}.
+\end{code}\noindent
+would typeset as
+\begin{PDFoutput}[10cm]
+	"Anchor points" have been introduced in~\kCref{anchor point}, Page \kpageref{anchor point}.
+\end{PDFoutput}
 
 \subsection{Dealing with math}
 \label{subsection:math}
@@ -2381,22 +2458,156 @@ The following \kl[\knowledge directives]{directives} are to be used:
 There are essentially two ways in which one would like to use "knowledge@@package" with mathematics:
 \begin{description}
 \item[Single introduction] Some mathematical objects are introduced once and for all in the paper. In this case, all the use of the object 
-should point to the same introduction location.
+should point to the same introduction location. This way of doing is covered intensively in the 
 \item[Variables] The more advanced case is when one wants to track variables. For instance, a macro variable~\cs\x\ could have a different meaning in two distinct theorems. This case is more similar to variables in a programming language, that have a scope.
-Here the situation is  slightly more complicated since a variable could be introduced in a theorem, and then used many pages later in a proof section for instance.
+Here the situation is  slightly more complicated since a variable could be introduced in a theorem, and then used many pages later in a proof section for instance. This is doable with the package, using scoping, but is not described yet in the documentation.
 \end{description}
-The first use is fairly easy. The second one requires a bit more care. We review them one after the other, after some advertisements for the "mathcommand@@package" package.
+
+
+
+
+\subsubsection{Defining knowledge-aware macros}
+\label{subsubsection:knowledgenewcommands}
+
+It is possible to use the \cs\kl\ command inside , and in math mode (however, the "quotation notation" should really be avoided). 
+Nevertheless, this may cause problematic results in various situations. For this reason, specialized tools are offered.
+
+In this first section, we describe the simplest way to define macros that are linked to "knowledge".
+This covers almost all situations, as long as one is not interested in having the knowledge dependant of the parameters of the macro.
+In the subsequent sections, some more explanations are given covering the case of parameters.
+
+
+\knowledgenewcommand\floor[1]{\cmdkl{\lfloor}#1\cmdkl{\rfloor}}
+
+\paragraph*{The use through an example}\AP
+Let us define the $\intro*\floor{x}$ command representing the 
+floor rounding of~$x$, and use it in $\floor{1.5}$. This is achieved by first defining a macro \cs\floor\ (for instance in the preamble):
+\begin{code}
+	\cs\knowledgenewrobustcmd\cs\floor[1]\{\cs\cmdkl\{\cs\lfloor\}\#1\cs\cmdkl\{\cs\rfloor\}\}
+\end{code}\noindent
+and then use it in a natural way:
+\begin{code}
+    \cs\AP\ Let us define the \$\cs\intro*\cs\floor\ x\$ command representing the floor rounding of \$x\$,
+    and use it in  \$\cs\floor\{1.5\}\$.
+\end{code}\noindent
+There, we used a special command, \cs\knowledgenewrobustcmd, which is similar to the  \cs\newrobustcmd\footnote{It has the same syntax as \cs\newcommand\ and should always be used instead as far as a good reason for not to do it is given.}
+and at the same time introduces a "knowledge" for the macro name (defined using the directive "automatic in command").
+It sets the contexts such that \cs\cmdkl\ implements the code for using this "knowledge". It is somehow similar to:
+\begin{code}
+	\cs\newrobustcmd\cs\floor[1]\{\cs\kl[\cs\floor]\{\cs\lfloor\}\#1\cs\kl[\cs\floor]\{\cs\rfloor\}\}\\
+	\cs\knowledge\{\cs\floor\}\{"automatic in command"\}
+\end{code}\noindent
+but is shorter to write and also corrects some bugs of this direct implementation\footnote{For instance, with this wrong implementation, 
+	\smallcode{\cs\intro*\cs\floor\ x} would display in \cs\intro\ aspect the `\cs\lfloor'\ symbol but not the `\cs\rfloor' one.}.
+
+\AP As explained above, the \cs\knowledge\ command is implicit when defining such macros. The "knowledge" name is the macro name itself, and the directive used is ""automatic in command"".
+Hence, you can modify the behavior by redefining the directive:
+\begin{quote}	
+	\cs\knowledgedirective*\{"automatic in command"\}\{\dots\}
+\end{quote}
+
+
+\paragraph{Defining new commands}
+We have used \cs\knowledgenewrobustcmd\ in the above example.
+In fact, several commands are available for defining such knowledge-enhanced macros.
+Each of them corresponds to a normal command (from \LaTeX, or "xparse@@package", or "mathcommand@@package"), prefixed with `\texttt{knowledge}' or `\texttt{Knowledge}'.
+The behavior of these commands is identical to the original ones, and furthemore activates the ability to use \cs\cmdkl.
+(Note that it is forbidden for your macro to absorb anything more than the parameters described during its definition.)
+\AP
+The commands
+\begin{quote}
+	\csintro\knowledgerenewcommand,\\
+	\csintro\knowledgenewrobustcmd, and \\
+	\csintro\knowledgenewcommand\footnote{You should always prefer \cs\knowledgenewrobustcmd\ instead. It is just here for completeness.},
+\end{quote}
+correspond to \cs\newcommand, \cs\renewcommand, and \cs\newrobustcmd\ (from "etoolbox@@package") respectively.
+\AP 
+The commands
+\begin{quote}
+	\csintro\KnowledgeNewDocumentCommand, \\
+	\csintro\KnowledgeRenewDocumentCommand, \\ 
+	\csintro\KnowledgeProvideDocumentCommand, and \\
+	\csintro\KnowledgeDeclareDocumentCommand
+\end{quote}
+extend the corresponding commands from the "xparse@@package" package (it offers more complete possibilities to define the signature of macros, and do it in a cleaner and more systematic way).
+
+\AP Finally, the commands of the "mathcommand@@package" package (see~\Cref{subsubsection:mathcommand})
+are also extended (provided it has been loaded before the package "knowledge@@package"), yielding:
+\begin{quote}
+ \csintro\knowledgedeclarecommand,  \\
+ \csintro\knowledgenewmathcommand, \\
+ \csintro\knowledgenewtextcommand,  \\
+ \csintro\knowledgerenewmathcommand, \\
+ \csintro\knowledgerenewtextcommand, \\
+ \csintro\knowledgedeclaremathcommand, \\
+ \csintro\knowledgedeclaretextcommand, \\
+ \csintro\KnowledgeNewDocumentMathCommand, \\
+ \csintro\KnowledgeNewDocumentTextCommand,\\
+ \csintro\KnowledgeRenewDocumentMathCommand, \\
+ \csintro\KnowledgeRenewDocumentTextCommand,\\
+ \csintro\KnowledgeProvideDocumentMathCommand, \\
+ \csintro\KnowledgeProvideDocumentTextCommand,\\
+ \csintro\KnowledgeDeclareDocumentMathCommand, \\
+ \csintro\KnowledgeDeclareDocumentTextCommand,\\
+ \csintro\knowledgenewcommandPIE, \\
+ \csintro\knowledgerenewcommandPIE,\\
+ \csintro\knowledgedeclarecommandPIE, \\
+ \csintro\knowledgenewmathcommandPIE,  \\
+ \csintro\knowledgerenewmathcommandPIE, \\
+ \csintro\knowledgedeclaremathcommandPIE, \\
+ \csintro\KnowledgeNewDocumentCommandPIE, \\
+ \csintro\KnowledgeRenewDocumentCommandPIE,\\
+ \csintro\KnowledgeDeclareDocumentCommandPIE, \\
+ \csintro\KnowledgeProvideDocumentCommandPIE,\\
+ \csintro\KnowledgeNewDocumentMathCommandPIE,  \\
+ \csintro\KnowledgeRenewDocumentMathCommandPIE,\\
+ \csintro\KnowledgeDeclareDocumentMathCommandPIE, and \\
+ \csintro\KnowledgeProvideDocumentMathCommandPIE.
+\end{quote}
+
+\subsubsection{The combination \cs\withkl/\cs\cmdkl}
+\label{subsubsection:withkl}
+
+In fact, inside commands like~\cs\knowledgenewrobustcmd, the command~\cs\withkl\ is used.
+It has to be used in combination with \cs\cmdkl:
+\begin{center}
+	\smallcode{\csintro\withkl\{\cs\kl-like command\}\{\dots\csintro\cmdkl\{A\}\dots\csreintro\cmdkl\{B\}\dots\}}
+\end{center}
+Inside the right argument of \cs\withkl, \cs\cmdkl\ stands for a shorthand for the \cs\kl-like command, with the following specificities:
+the "modifiers@@variant" used before the \cs\withkl\ are absorbed and reinjected for each use of~\cs\cmdkl. Furthermore, all the uses of \cs\cmdkl, but the first one, get to be preceded of the \csintro\rekl* "modifier@@variant", which transformes in particular \cs\intro\ into \cs\reintro. Hence,
+\smallcode{\cs\intro*\cs\withkl\{\cs\kl[example]\}\{\dots\cs\cmdkl\{A\}\dots\cs\cmdkl\{B\}\dots\}}
+gets to be evaluated as
+\smallcode{\dots\cs\intro[example]\{A\}\dots\cs\reintro[example]\{B\}\dots}
+
+An example of use of this technique is if we want "knowledges" aware of the parameters of a macro.
+Imagine that you use the norms $1$ and $2$ of a function:
+\begin{code}
+\cs\newrobustcmd\cs\norm[2]\par
+	~~~~\{\cs\withkl\{\cs\kl[\cs\norm\{\#1\}]\}\{\cs\cmdkl\{\cs\|\}\#2\cs\cmdkl\{\cs\|\}\_\{\cs\cmdkl\{\#1\}\}\}\}\\
+\cs\knowledge\{\cs\norm\{1\}\}\{notion\}\\
+\cs\knowledge\{\cs\norm\{2\}\}\{notion\}
+\end{code}\noindent
+Now, the norm $1$ and the norm $2$ can be defined in different places since "knowledge" is specific to each case.
+\begin{code}
+   \cs\AP\ The norm~\$1\$ of a function~\$f\$ is denoted \$\cs\intro*\cs\norm1f\$.\\
+   {}[...]\\
+   \cs\AP\ The norm~\$2\$ of a function~\$f\$ is denoted \$\cs\intro*\cs\norm2f\$.\\
+   {}[...]\\
+   Here, \$\cs\norm 1g\$ and \$\cs\norm2h\$ link to the proper place, while\\\$\cs\norm3g\$ is an undefined knowledge.
+\end{code}
+
 
 \subsubsection{Defining macros for math: the "mathcommand@@package" package}
 \label{subsubsection:mathcommand}
 
-Defining macros is standard in \TeX, and it should be used systematically in writing scientific documents.
+Defining macros is standard in \TeX, and it should be used systematically when writing scientific documents.
 This is particularly true when using the "knowledge@@package" package.
 The standard way in \LaTeX\ for defining macros is to use \cs\newcommand. However, the resulting macro, if it has
 no optional parameters, is then expandable, and it is better to avoid it using instead \cs\newrobustcmd\ from the "etoolbox@@package"
-package (it has the same syntax).
+package (it has the same syntax). Generally speaking, the "xparse@@package" package, which gives easier syntax for describing commands, possibly with more complex parameter templates, should be preferred.
 
-Another package "mathcommand@@package" has been designed to be used in conjunction with "knowledge@@package".
+Another package, "mathcommand@@package", has been designed to be used in conjunction with
+"knowledge@@package"\footnote{Note that all the commands for defining macros also exist in a "knowledge"-compatible form (see \Cref{subsubsection:knowledgenewcommands})}.
 We shall use it in the advanced examples below. It allows:
 \begin{itemize}
 \item to define/redefine commands to be used in math mode only. This allows for instance to use the macro \cs\c\ for producing as usual a cedilla in text mode, and at the same time some variable $\mathbf c$ in math mode. This is achieved using for instance:
@@ -2411,6 +2622,10 @@ We shall use it in the advanced examples below. It allows:
   Now \$\cs\pi\$ points to the above sentence.  
   \end{code}
   This code works because a different name \cs\LaTeXpi\ stores the original macro. Using~\cs\pi\ instead would yield an infinite loop.
+  Even better is to use the knowledge-aware version:
+  \begin{code}
+  	\cs\knowledgerenewmathcommand\cs\pi\{\cs\cmdkl\{\cs\LaTeXpi\}\}
+  \end{code}
 \item The package also gives access to the exponents and indices as well as primes that follow a command (see the documentation).
 \item It also has some facilities for disabling \LaTeX\ commands and provide suggestions of replacement (useful for remembering the macros and working with colleagues).
 \item Finally, it offers some commodity for redefining many variables in one command.
@@ -2433,14 +2648,14 @@ Five points have to be kept in mind:
 \item Do not mix the "knowledge" concerning math commands and normal text. It is in practice
   difficult to maintain.
 \item Use the control sequence of the macro itself as the "knowledge" name.
-    This does not cause problems and is easier to maintain.
+    This does not cause problems and is easier to maintain. This is automatically done when
+    commands such as \cs\knowledgenewrobustcmd\ are used.
 \item Use the \cs{\intro*} notation for introducing macros. 
-\item The surrounding typography is broken when using the command \cs{\kl} (if someone knows how to solve that, please contact me). Commands such as \cs\mathrel\ should be used to recover it.
+\item The surrounding typography may be broken when using the command \cs{\kl}, or \cs\cmdkl\ (if someone knows how to solve that, please contact me). Commands such as \cs\mathrel\ should be used to recover it.
 \end{itemize}
 These five points are illustrated in the following code:
 \begin{code}
-\cs\newrobustcmd\cs\comp\{\cs\mathrel\{\cs\kl[\cs\comp]\{\cs\circ\}\}\}\\
-\cs\knowledge\cs\comp\{notion\}\\
+\cs\knowledgenewrobustcmd\cs\comp\{\cs\mathrel\{\cs\cmdkl\{\cs\circ\}\}\}\\
 {[...]}\\
 \cs\AP\ Composition is denoted \$\cs{\intro*}\cs\comp\$.\\
 {[...]}\\
@@ -2453,34 +2668,27 @@ Two variation may be comfortable to use.
 When writing a paper, in particular with coauthors, one may be tempted to not always use the macros designed for each case.
 For helping to remember the macro, one can use instead (using the "mathcommand@@package" package):
 \begin{code}
-\cs\disablecommand\cs\circ\\
-\cs\suggestcommand\cs\rho\{Use instead \cs\comp\ for function composition.\}\\
-\cs\newrobustcmd\cs\myFunction\{\cs\kl[\cs\myFunction]\{\cs\LaTeXrho\}\}\\
-\cs\knowledge\cs\myFunction\{notion\}\\
-{[...]}\\
-\AP Let \$\cs{\intro*}\cs\myFunction(x)=[...]\$\\
-{[...]}\\
-Now, each use of \$\cs\myFunction\$ points to its introduction.
+\csintro\disablecommand\cs\circ\\
+\csintro\suggestcommand\cs\circ\{Use instead \cs\comp\ for function composition.\}\\
+\cs\knowledgenewrobustcmd\cs\comp\{\cs\cmdkl\{\cs\LaTeXcirc\}\}\\
 \end{code}
-\noindent The result is that if one uses \cs\rho\ in the code, an error will be issued, and \cs\myFunction\ be suggested as a replacement.
-Note that more than one suggestions can be attached to the macro (if several macros use the symbol~$\rho$). Note also
-that in the definition of \cs\myFunction, \cs\LaTeXrho\ is used instead of~\cs\rho. Indeed, \cs\rho\ has been deactivated,
-but~\cs\LaTeXrho\ gives access to its original meaning.
+\noindent The result is that if one uses \cs\circ\ in the code, an error will be issued, and \cs\comp\ will be suggested as a replacement.
+Note that more than one suggestions can be attached to the macro (if several macros use the symbol~\cs\comp\ with different meanings). Note also that in the definition of \cs\comp, \cs\LaTeXcirc\ is used instead of~\cs\circ. Indeed, \cs\circ\ has been deactivated,
+but~\cs\LaTeXcirc\ gives access to its original meaning.
 
 \paragraph{Redefining the original \TeX\ macro}
-Another situation is that one would like to use the \cs\rho\ control sequence for accessing our function instead of \cs\myFunction\ (simply because this is more convenient and easy to remember, and we know in advance that no confusion may arise).
+Another situation is that one would like to use the \cs\circ\ control sequence for accessing our function instead of \cs\comp\ (simply because this is more convenient and easy to remember, and we know in advance that no confusion may arise).
 In this case, the "mathcommand@@package" package can also be of some help:
 \begin{code}
-\cs\renewmathcommand\cs\rho\{\cs\kl[\cs\rho]\{\cs\LaTeXrho\}\}\\
-\cs\knowledge\cs\rho\{notion\}\\
+\cs\knowledgerenewmathcommand\cs\circ\{\cs\mathrel\{\cs\cmdkl\{\cs\LaTeXcirc\}\}\}\\
 {[...]}\\
-\cs\AP\ Let \$\cs{\intro*}\cs\rho(x)=[...]\$\\
+\cs\AP\ Let \$g\cs{\intro*}\cs\circ\ f\$ denote the composition of functions.\\
 {[...]}\\
-Now, each use of \$\cs\rho\$ points to its introduction.
+Now, each use of \$\cs\circ\$ points to its introduction.
 \end{code}
 \noindent
-The effect of \cs\renewmathcommand\ is that it sets~\cs\LaTeXrho\ to have the same effect as the original \cs\rho\ command,
-and then redefines~\cs\rho.
+The effect of \cs\knowledgerenewmathcommand\ is that it sets~\cs\LaTeXcirc\ to have the same effect as the original \cs\circ\ command,
+and then redefines~\cs\circ.
 
 \subsubsection{Context dependent variables}
 
@@ -2505,19 +2713,6 @@ For obtaining this, this requires:
 \fi
 
 
-
-\subsection{Fixes}
-\label{subsection:fixes}
-
-In this section, we present some fixes that have been added to help the user solve problems.
-
-\paragraph{Hyperref and twocolumn} It happens that the "hyperref@@package" and two-column mode together may yield a fatal error. This happens when a link spans across the boundary between two pages. This is an issue which is not related to the "knowledge@@package" package, but becomes severely more annoying when more links have to be used.
-A \emph{workaround} can be tried by using using
-\begin{center}
-\smallcode{\cs\knowledgeconfigure\{""fix hyperref twocolumn""\}}.
-\end{center}
-I do not know to which extend it is compatible with various classes...
-
 \subsection{Predefined configuration}
 
 \subsubsection{The "notion@@option" directive}
@@ -2550,6 +2745,19 @@ A typical document using notion could start by the following commands:
 \end{code}\noindent
 Then the paper is displayed in a colorful way. 
 
+
+
+\subsection{Fixes}
+\label{subsection:fixes}
+
+In this section, we present some fixes that have been added to help the user solve problems.
+
+\paragraph{Hyperref and twocolumn} It happens that the "hyperref@@package" and two-column mode together may yield a fatal error. This happens when a link spans across the boundary between two pages. This is an issue which is not related to the "knowledge@@package" package, but becomes severely more annoying when more links have to be used.
+A \emph{workaround} can be tried by using using
+\begin{center}
+\smallcode{\cs\knowledgeconfigure\{""fix hyperref twocolumn""\}}.
+\end{center}
+I do not know to which extend it is compatible with various classes...
 \newpage
 
 \section{Some questions and some answers}
@@ -2719,10 +2927,10 @@ and \cs\compAP\ for "complexity@@package",
 
 \subsection{Incorrect display}
 
-\subsubsection{Incorrect breaking at the end of lines (in  Arxiv for instance)}
+\subsubsection{Incorrect breaking at the end of lines (in  "arXiv" for instance)}
 
 It may happen that some hyperlinks generated by "knowledge@@package" are not broken properly
-at the end of lines. This is an issue with the \kl(package){hyperref} package. This happens in particular for files compiled by the Arxiv system while the file on the local computer was not having any problem. A workaround is to use the \kl{breaklinks} option of  \kl(package){hyperref}. If you need this for Arxiv, then you also have to force the use of \cs\pdflatex\ (because the \kl{breaklinks} option does not work if compiled via the ancestral sequence TEX$\rightarrow$DVI$\rightarrow$PS$\rightarrow$PDF). This can be obtained by adding \smallcode{\cs\pdfoutput=1} within the five first lines of the preamble.
+at the end of lines. This is an issue with the \kl(package){hyperref} package. This happens in particular for files compiled by the "arXiv" system while the file on the local computer was not having any problem. A workaround is to use the \kl{breaklinks} option of  \kl(package){hyperref}. If you need this for "arXiv", then you also have to force the use of \cs\pdflatex\ (because the \kl{breaklinks} option does not work if compiled via the ancestral sequence TEX$\rightarrow$DVI$\rightarrow$PS$\rightarrow$PDF). This can be obtained by adding \smallcode{\cs\pdfoutput=1} within the five first lines of the preamble.
 
 The preamble thus looks like:
 \begin{code}[9cm]
@@ -2749,6 +2957,16 @@ Some classes, like \kl(package){acmart}, change the default color of the hyperli
   \cs\knowledgestyle\{"notion@@style"\}\{"color="black\}\\
 \cs{\ fi}
 \end{code}
+
+\subsubsection{Unexepected color in margin paragraph}
+This is a problem of the combination of the package "xcolor@@package" with \cs\marginpar: when a colored text gets to be broken into separated lines and the \cs\marginpar\ be inserted at this place, the colors leaks in to the margin text.
+It is independent of "knowledge@@package", but is more likely to occur when colors are often used.
+A correction is to force going the use of color black whenever inside a \cs\marginpar. For instance:
+\begin{code}
+\cs\let\cs\LaTeXmarginpar\cs\marginpar\\
+\cs\def\cs\marginpar\#1\{\cs\LaTeXmarginpar\{\cs\textcolor\{black\}\{\#1\}\}\}
+\end{code}
+
 \subsection{Problems with scope}
 
 \subsubsection{Problems in combination with \cs{\bibitem} and "thebibliography@@env"}
@@ -2818,6 +3036,7 @@ If other kind of problems occur, report them to \texttt{thomas.colcombet@irif.fr
 \begin{compactdesc}
 \item[\cs\AP] introduces an "anchor point".
 \item[\cs\intro] searches for a \kl{knowledge} and put an anchor to it (to be used with the \kl{autoref} directive).
+\item[\cs\kcref, \cs\kCref, \cs\kcpageref, \cs\kCpageref, \cs\knamecref, \cs\knameCref, \cs\knamecref] and \cs\knameCref\ display some information concerning the place of introduction of a "knowledge" as the \cs\cref, \cs\Cref, \cs\cpageref, \cs\Cpageref, \cs\namecref, \cs\nameCref, \cs\namecref\ and \cs\nameCref\ commands of the \kl(package){cleveref} package.
 \item[\cs\kl] searches for a \kl{knowledge} and displays it accordingly.
 \item[\cs\knowledge] defines new \kl{knowledges}.
 \item[\cs\knowledgeconfigure] configures the package.
@@ -2828,6 +3047,8 @@ If other kind of problems occur, report them to \texttt{thomas.colcombet@irif.fr
 \item[\cs\knowledgesetvariant] configures a "variant of \cs{\kl}".
 \item[\cs\knowledgestyle] defines a new \kl{style}.
 \item[\cs\knowledgevariantmodifier] declares a meaning of \cs{*} in  "variants of \cs{\kl}".
+\item[\cs\kpageref] displays the page number of a reference,
+\item[\cs\kref] displays the number associated to a reference introduction.
 \item[\cs\nointro] declares that the knowledge will never be introduced (does not work properly yet).
 \item[\cs\phantomintro] performs an invisible \cs\intro.
 \item[\cs\reintro] uses the \kl{display style} of \cs{\intro} without introducing an anchor.
@@ -2845,7 +3066,7 @@ If other kind of problems occur, report them to \texttt{thomas.colcombet@irif.fr
 
 
 \begin{compactdesc}
-\item["autoref"] Activates the \cs{\intro} feature (requires the "hyperref@@package").
+\item["autoref"] Activates the \cs{\intro} feature.
 \item["autoref link"] activates an hyperlink to the target.
 \item["autoref target"] puts a target for a hyperlink.
 \item[\kl{autorefhere}] creates an \kl{anchor point} that points to the \cs{\knowledge} command (Requires the \kl{hyperref option}).
@@ -2875,6 +3096,7 @@ If other kind of problems occur, report them to \texttt{thomas.colcombet@irif.fr
  if present.
 \item[\kl{lowercase}] Put all letters of the output in lowercase.
 \item[\kl{mathord}, \kl{mathop}, \kl{mathbin}, \kl{mathrel}, \kl{mathopen}, \kl{mathclose}, \kl{mathpunct}] Selects a spacing behaviour in math mode.
+\item[\kl{no index}] avoids the indexing of the term.
 \item[\kl{protect link}] Disables the hyperlinks inside the link.
 \item[\kl{ref=}] Links to a label inside the document.
 \item[\kl{scope=}] Choose the \kl{scope} of the definition.
@@ -2891,10 +3113,15 @@ If other kind of problems occur, report them to \texttt{thomas.colcombet@irif.fr
 \item[\kl{wrap=}] A macro used to process the displayed text. 
 \end{compactdesc}
 
-\subsection{List of \kl{configuration directives} (to use with \cs{\knowledgeconfigure})}
+\subsection{List of \kl{configuration directives}}
 \label{subsection:configuration directive list}
+The following directives can be used as options when loading the package, or later using \cs{\knowledgeconfigure}.
 
 \begin{compactdesc}
+\item["anchor point color="color] changes the color of "anchor point",
+\item["anchor point shape="shape] changes the shape of "anchor points", in which shape can be  \texttt{tiny corner},  \texttt{small corner}, \texttt{corner}, \texttt{large corner},
+	 \texttt{tiny cross},  \texttt{small cross}, \texttt{cross}, \texttt{large cross}, or some code to be execute in the "picture@@env" environment,
+\item["anchor point shift="\{$x$,$y$\}] shifts the "anchor point" (in \texttt{em} unit),
 \item["diagnose bar="\textmd{\{true,false\}}] activates the \kl{`\vbar'-notation} in the "diagnose file" (default is false)
 \item["composition"] switches to "composition mode",
 \item["cyclic colors=@@option"] fixes the cyclic list of colors used by the "directive" "cyclic color".
diff --git a/macros/latex/contrib/spbmark/spbmark.pdf b/macros/latex/contrib/spbmark/spbmark.pdf
index 07b2e984d4..0dc97fd394 100644
--- a/macros/latex/contrib/spbmark/spbmark.pdf
+++ b/macros/latex/contrib/spbmark/spbmark.pdf
diff --git a/macros/latex/contrib/spbmark/spbmark.sty b/macros/latex/contrib/spbmark/spbmark.sty
index 465a035066..10defa9e25 100644
--- a/macros/latex/contrib/spbmark/spbmark.sty
+++ b/macros/latex/contrib/spbmark/spbmark.sty
@@ -9,7 +9,7 @@
 %   https://creativecommons.org/licenses/by/4.0/legalcode
 \NeedsTeXFormat{LaTeX2e}[2018/12/31]
 \RequirePackage{xparse,l3keys2e}
-\ProvidesExplPackage{spbmark}{2021/12/18}{1.2C}
+\ProvidesExplPackage{spbmark}{2021/12/20}{1.2E}
   {Customize superscripts and subscripts}
 
 \cs_generate_variant:Nn \dim_max:nn { VV }
@@ -55,29 +55,29 @@
   }
 \spb_define:n
   {
-    spvmove .dim_set:N  = \l__spb_super_vmove_dim,
+    spvmove .tl_set:N   = \l__spb_super_vmove_tl,
     spvmove .initial:n  = 0pt,
-    sphmove .dim_set:N  = \l__spb_super_hmove_dim,
+    sphmove .tl_set:N   = \l__spb_super_hmove_tl,
     sphmove .initial:n  = 0pt,
-    sbvmove .dim_set:N  = \l__spb_sub_vmove_dim,
+    sbvmove .tl_set:N   = \l__spb_sub_vmove_tl,
     sbvmove .initial:n  = 0pt,
-    sbhmove .dim_set:N  = \l__spb_sub_hmove_dim,
+    sbhmove .tl_set:N   = \l__spb_sub_hmove_tl,
     sbhmove .initial:n  = 0pt,
-    spbhmove .dim_set:N = \l__spb_supersub_hmove_dim,
+    spbhmove .tl_set:N  = \l__spb_supersub_hmove_tl,
     spbhmove .initial:n = 0pt,
     vmove .code:n       =
       {
         \spb_local_case_init:nnnn { vmove }
-          { \dim_set:Nn \l__spb_super_vmove_dim {#1} }
-          { \dim_set:Nn \l__spb_sub_vmove_dim {#1} }
-          { \dim_set:Nn \l__spb_supersub_vsep_dim {#1} }
+          { \tl_set:Nn \l__spb_super_vmove_tl {#1} }
+          { \tl_set:Nn \l__spb_sub_vmove_tl {#1} }
+          { \tl_set:Nn \l__spb_supersub_vsep_tl {#1} }
       },
     hmove .code:n       =
       {
         \spb_local_case_init:nnnn { hmove }
-          { \dim_set:Nn \l__spb_super_hmove_dim {#1} }
-          { \dim_set:Nn \l__spb_sub_hmove_dim {#1} }
-          { \dim_set:Nn \l__spb_supersub_hmove_dim {#1} }
+          { \tl_set:Nn \l__spb_super_hmove_tl {#1} }
+          { \tl_set:Nn \l__spb_sub_hmove_tl {#1} }
+          { \tl_set:Nn \l__spb_supersub_hmove_tl {#1} }
       },
     nohmove .meta:n     = { sphmove = 0pt,sbhmove = 0pt },
     novmove .meta:n     = { spvmove = 0pt,sbvmove = 0pt },
@@ -101,7 +101,7 @@
           { \tl_put_right:Nn \l__spb_sub_cmd_i_tl {#1} }
           { \spb@both@cmd@assign+{#1} }
       },
-    vsep .dim_set:N     = \l__spb_supersub_vsep_dim,
+    vsep .tl_set:N      = \l__spb_supersub_vsep_tl,
     vsep .initial:n     = 0.6ex,
     halign .tl_set:N    = \l__spb_supersub_halign_tl,
     halign .initial:n   = l,
@@ -109,38 +109,6 @@
     mode .initial:n     = match
   }
 
-\tl_set:Nn \l__spb_boxa_wd_tl { \box_wd:N \l_tmpa_box }
-\tl_set:Nn \l__spb_boxb_wd_tl { \box_wd:N \l_tmpb_box }
-\tl_set:Nn \l__spb_box_max_wd_tl
-  { \dim_max:VV \l__spb_boxa_wd_tl \l__spb_boxb_wd_tl }
-\providecommand{\hbox_overlap_center:n}[1]
-  { \hbox_to_zero:n { \hss #1\hss } }
-\cs_new:Npn \spb_boxa_move_up:n #1
-  { \box_move_up:nn {#1} { \box_use:N \l_tmpa_box } }
-\cs_new:Npn \spb_boxa_move_down:n #1
-  { \box_move_down:nn {#1} { \box_use:N \l_tmpa_box } }
-\cs_new:Npn \spb_boxb_move_down:n #1
-  { \box_move_down:nn {#1} { \box_use:N \l_tmpb_box } }
-\cs_new:Npn \spb_boxa_vmove:nn #1
-  {
-    \str_case:nn {#1}
-      {
-        { super } { \spb_boxa_move_up:n }
-        { sub } { \spb_boxa_move_down:n }
-      }
-  }
-\cs_generate_variant:Nn \spb_boxa_move_up:n { V }
-\cs_generate_variant:Nn \spb_boxb_move_down:n { V }
-\dim_new:N \l__spb_supersub_half_vsep_dim
-\cs_new:Npn \spb_hbox_overlap_vmove:n #1
-  {
-    \dim_set:Nn \l__spb_supersub_half_vsep_dim
-      { \l__spb_supersub_vsep_dim/2 }
-    \use:c { hbox_overlap_#1:n }
-      { \spb_boxa_move_up:V \l__spb_supersub_half_vsep_dim }
-    \use:c { hbox_overlap_#1:n }
-      { \spb_boxb_move_down:V \l__spb_supersub_half_vsep_dim }
-  }
 \cs_set_eq:NN \spb@textsuperscript@save \textsuperscript
 \cs_set_eq:NN \spb@textsubscript@save \textsubscript
 \cs_set_eq:NN \spb@math@super@save \sp
@@ -178,10 +146,73 @@
     \hbox_set:Nn \l_tmpb_box
       { \spb@textsubscript@save{\l__spb_sub_cmd_ii_tl{#2}} }
   }
+\cs_set_eq:NN \spbifmath \use_ii:nn
+\cs_new:Npn \spb@ifmathtrue { \cs_set_eq:NN \spbifmath \use_i:nn }
+\cs_new:Npn \spb@ifmathfalse { \cs_set_eq:NN \spbifmath \use_ii:nn }
+\cs_new_protected:Npn \spb_mode_switch:nnn #1#2#3
+  {
+    \str_case:Vn \l__spb_mode_value_tl
+      {
+        { math }
+        {
+          \spb@ifmathtrue
+          \use:c { spb_math_print_store_#3:nn } {#1} {#2}
+        }
+        { text }
+        {
+          \spb@ifmathfalse
+          \use:c { spb_text_print_store_#3:nn } {#1} {#2}
+        }
+        { match }
+        {
+          \mode_if_math:TF
+            {
+              \spb@ifmathtrue
+              \use:c { spb_math_print_store_#3:nn } {#1} {#2}
+            }
+            {
+              \spb@ifmathfalse
+              \use:c { spb_text_print_store_#3:nn } {#1} {#2}
+            }
+        }
+      }
+   }
+\tl_set:Nn \l__spb_boxa_wd_tl { \box_wd:N \l_tmpa_box }
+\tl_set:Nn \l__spb_boxb_wd_tl { \box_wd:N \l_tmpb_box }
+\tl_set:Nn \l__spb_box_max_wd_tl
+  { \dim_max:VV \l__spb_boxa_wd_tl \l__spb_boxb_wd_tl }
+\providecommand{\hbox_overlap_center:n}[1]
+  { \hbox_to_zero:n { \hss #1\hss } }
+\cs_new:Npn \spb_boxa_move_up:n #1
+  { \box_move_up:nn {#1} { \box_use:N \l_tmpa_box } }
+\cs_new:Npn \spb_boxa_move_down:n #1
+  { \box_move_down:nn {#1} { \box_use:N \l_tmpa_box } }
+\cs_new:Npn \spb_boxb_move_down:n #1
+  { \box_move_down:nn {#1} { \box_use:N \l_tmpb_box } }
+\cs_new:Npn \spb_boxa_vmove:nn #1
+  {
+    \str_case:nn {#1}
+      {
+        { super } { \spb_boxa_move_up:n }
+        { sub } { \spb_boxa_move_down:n }
+      }
+  }
+\cs_generate_variant:Nn \spb_boxa_move_up:n { V }
+\cs_generate_variant:Nn \spb_boxb_move_down:n { V }
+\dim_new:N \l__spb_supersub_half_vsep_tl
+\cs_new:Npn \spb_hbox_overlap_vmove:n #1
+  {
+    \tl_set:Nn \l__spb_supersub_half_vsep_tl
+      { \l__spb_supersub_vsep_tl/2 }
+    \use:c { hbox_overlap_#1:n }
+      { \spb_boxa_move_up:V \l__spb_supersub_half_vsep_tl }
+    \use:c { hbox_overlap_#1:n }
+      { \spb_boxb_move_down:V \l__spb_supersub_half_vsep_tl }
+  }
 \cs_new_protected:Npn \spb_box_ht_dp_assign:nn #1#2
   {
-    \tl_if_empty:nF {#1} { \box_set_ht:Nn \l_tmpb_box {#1} }
-    \tl_if_novalue:nF {#2} { \box_set_dp:Nn \l_tmpb_box {#2} }
+    \tl_if_empty:nF {#1} { \box_set_ht:Nn \l_tmpa_box {#1} }
+    \tl_if_novalue:nF {#2} { \box_set_dp:Nn \l_tmpa_box {#2} }
   }
 \NewDocumentCommand{\spb@both@cmd@assign}
   {t+>{\SplitArgument{1}{,}}m}
@@ -202,22 +233,6 @@
     \tl_put_right:Nn \l__spb_super_cmd_ii_tl {#1}
     \tl_if_novalue:nF {#2} { \tl_put_right:Nn \l__spb_sub_cmd_ii_tl {#2} }
   }
-\cs_new_protected:Npn \spb_mode_switch:nnn #1#2#3
-  {
-    \str_case:Vn \l__spb_mode_value_tl
-      {
-        { math }
-        { \use:c { spb_math_print_store_#3:nn } {#1} {#2} }
-        { text }
-        { \use:c { spb_text_print_store_#3:nn } {#1} {#2} }
-        { match }
-        {
-          \mode_if_math:TF
-            { \use:c { spb_math_print_store_#3:nn } {#1} {#2} }
-            { \use:c { spb_text_print_store_#3:nn } {#1} {#2} }
-        }
-      }
-   }
 \cs_new_protected:Npn \spb_global_value_init:n #1
   {
     \tl_gset:Nn \g__spb_hmove_init_tl {#1}
@@ -244,26 +259,26 @@
   {
     \hbox_set:Nn \l_tmpa_box
       {
-        \dim_compare:nNnTF { \dim_use:c { l__spb_#1_hmove_dim } } < { 0pt }
+        \dim_compare:nNnTF { \tl_use:c { l__spb_#1_hmove_tl } } < { 0pt }
           {
             \hbox_overlap_left:n
               {
                 \hbox_overlap_right:n
-                  { \spb_boxa_vmove:nn {#1} { \dim_use:c { l__spb_#1_vmove_dim } } }
-                \skip_horizontal:n { -\dim_use:c { l__spb_#1_hmove_dim } }
+                  { \spb_boxa_vmove:nn {#1} { \tl_use:c { l__spb_#1_vmove_tl } } }
+                \skip_horizontal:n { -\tl_use:c { l__spb_#1_hmove_tl } }
               }
           }
           {
             \hbox_to_wd:nn
-              { \l__spb_boxa_wd_tl + \dim_use:c { l__spb_#1_hmove_dim } }
-              { \hss\spb_boxa_vmove:nn {#1} { \dim_use:c { l__spb_#1_vmove_dim } } }
+              { \l__spb_boxa_wd_tl + \tl_use:c { l__spb_#1_hmove_tl } }
+              { \hss\spb_boxa_vmove:nn {#1} { \tl_use:c { l__spb_#1_vmove_tl } } }
           }
       }
   }
 \clist_map_inline:nn { super,sub } { \spb_both_newcmd_map:n {#1} }
 
 \cs_new:Npn \spb_supersub_hmove_if_negative:TF #1#2
-  { \dim_compare:VNnTF \l__spb_supersub_hmove_dim < { 0pt } {#1} {#2} }
+  { \dim_compare:VNnTF \l__spb_supersub_hmove_tl < { 0pt } {#1} {#2} }
 \NewDocumentCommand{\supersub}{O{}mmO{}}
   {
     \group_begin:
@@ -286,13 +301,13 @@
             \hbox_overlap_left:n
               {
                 \spb_hbox_overlap_vmove:n { right }
-                \skip_horizontal:n { -\l__spb_supersub_hmove_dim }
+                \skip_horizontal:n { -\l__spb_supersub_hmove_tl }
               }
           }
           {
             \hbox:n
               {
-                \skip_horizontal:n { \l__spb_supersub_hmove_dim }
+                \skip_horizontal:n { \l__spb_supersub_hmove_tl }
                 \spb_hbox_overlap_vmove:n { right } 
                 \skip_horizontal:n { \l__spb_box_max_wd_tl }
               }
@@ -304,13 +319,13 @@
             \hbox_overlap_left:n
               {
                 \spb_hbox_overlap_vmove:n { center }
-                \skip_horizontal:n { \l__spb_box_max_wd_tl/2 - \l__spb_supersub_hmove_dim }
+                \skip_horizontal:n { -\l__spb_supersub_hmove_tl - \l__spb_box_max_wd_tl/2 }
               }
           }
           {
             \hbox:n
               {
-                \skip_horizontal:n { \l__spb_box_max_wd_tl/2 + \l__spb_supersub_hmove_dim }
+                \skip_horizontal:n { \l__spb_box_max_wd_tl/2 + \l__spb_supersub_hmove_tl }
                 \spb_hbox_overlap_vmove:n { center } 
                 \skip_horizontal:n { \l__spb_box_max_wd_tl/2 }
               }
@@ -322,13 +337,13 @@
             \hbox_overlap_left:n
               {
                 \spb_hbox_overlap_vmove:n { left }
-                \skip_horizontal:n { -\l__spb_supersub_hmove_dim }
+                \skip_horizontal:n { -\l__spb_supersub_hmove_tl - \l__spb_box_max_wd_tl }
               }
           }
           {
             \hbox:n
               {
-                \skip_horizontal:n { \l__spb_box_max_wd_tl + \l__spb_supersub_hmove_dim }
+                \skip_horizontal:n { \l__spb_box_max_wd_tl + \l__spb_supersub_hmove_tl }
                 \spb_hbox_overlap_vmove:n { left } 
               }
           }
diff --git a/macros/latex/contrib/spbmark/spbmark.tex b/macros/latex/contrib/spbmark/spbmark.tex
index 8f9ed7f08d..93620fd8a7 100644
--- a/macros/latex/contrib/spbmark/spbmark.tex
+++ b/macros/latex/contrib/spbmark/spbmark.tex
@@ -6,8 +6,8 @@
   {
     package           = spbmark,
     title             = the spbmark package,
-    version           = v1.2C,
-    date              = 2021/12/18,
+    version           = v1.2E,
+    date              = 2021/12/20,
     authors           = Qu Yi,
     info              = Customize superscript and subscript,
     email             = q1jx@foxmail.com,
@@ -67,6 +67,8 @@ There are currently three commands to set superscript and subscript. Their forma
   This is a subscript output command. The two \meta{kv list} are equivalent.
   \command{supersub}[\oarg{kv list}\marg{super cont}\marg{sub cont}\oarg{kv list}]
   This is a command that outputs both superscript and subscript at the same time. You can also use the shorter command \cs{spb} instead of it. The two \meta{kv list} are equivalent.
+  \command{spbifmath}[\marg{math code}\marg{text code}]
+  In some cases, \code{math} or \code{text} output modes require different code for format or move. This command can be used when using the \code{match} option or changing the output mode locally, whitch should be used in the move or format options. It can switch the corresponding code according to different output modes.
 \end{commands}
 
 The optional parameter \splitmeta{height}{depth} generally does not need to be used. The \meta{height} and \meta{depth} are separated by commas. Only the front part indicates the \meta{height} of the superscript or subscript, and only the back part indicates the \meta{depth}.
@@ -74,7 +76,7 @@ The optional parameter \splitmeta{height}{depth} generally does not need to be u
 The options common to \meta{kv list} of the three commands are as follows. They can be used in \meta{key-value list} for the \cs{spbset} command. If \option{vmove}, \option{hmove} and \option{cmd} are used in the \cs{spbset} command, it is set according to the type of the previous nearest command.
 \begin{options}
   \keyval{vmove}{fixed length}\Default{0pt}
-  Vertical move of superscript or subscript. Represents the vertical distance \option{vsep} between superscript and subscript in the superscript and subscript commands.
+  Vertical move of superscript or subscript. Represents the extra vertical distance \option{vsep} between superscript and subscript in the superscript and subscript commands.
   \keyval{hmove}{fixed length}\Default{0pt}
   Horizontal move of superscript or subscript. Represents the common move in the superscript and subscript commands.
   \keyval{cmd}{format cmds}\Default
@@ -116,7 +118,7 @@ The following list of keys control the format both of superscript or subscript.
   Add code to the previous global subcript format commands.
 \end{options}
 
-If \option{sphmove} is positive, the superscript or subscript moves to the right, and if it is negative, it moves to the left. However, for superscript, if \option{spvmove} is positive, the superscript moves up, and if spvmove is negative, it moves down. For subscripts, if \option{spvmove} is positive, the subscript moves down, and if spvmove is negative, it moves up.
+If \option{sphmove} is positive, the superscript or subscript moves to the right, conversely it moves to the left. However, for superscript, if \option{spvmove} is positive, the superscript moves up, conversely it moves down. For subscript, if \option{spvmove} is positive, the subscript moves down, conversely it moves up.
 
 The following list of keys control the format of superscript and subscript.
 \begin{options}
@@ -127,7 +129,7 @@ The following list of keys control the format of superscript and subscript.
   \kvsplit{spbcmd+}{super cmds}{sub cmds}\Default
   Add code to the previous global superscript and subscript format commands.
   \keyval{vsep}{fixed length}\Default{0.6ex}
-  The vertical distance between superscript and subscript.
+  The extra vertical distance between superscript and subscript.
   \keychoice{halign}{l,c,r}\Default{l}
   The alignment of superscript and subscript, which contains \code{l}, \code{c}, and \code{r} parameters respectively for left, center, and right alignment.
 \end{options}
@@ -135,7 +137,7 @@ The following list of keys control the format of superscript and subscript.
 \section{Examples of use}
 Here is a list of the three commands, please pay attention to the usage of optional parameters. Note when the horizontal move is negative, the starting point is at the right end of the mark.
 \begin{example}
-\spbset{spbcmd={\ttfamily,\color{blue}}}
+\spbset{spbcmd={\spbifmath{\mathtt}{\ttfamily},\color{blue}}}
 A\super[vmove=0.2ex,hmove=0.2em,cmd=\textcolor{red}]{exam}B \\
 $A\sub[cmd=\mathsf,mode=math]{exam}B$ \\
 A\supersub[vsep=0.6ex,halign=c]{examsuper}{sub}B \\
diff --git a/macros/latex/contrib/tcolorbox/CHANGES.md b/macros/latex/contrib/tcolorbox/CHANGES.md
index 382ed3d10b..be2c2e58e2 100644
--- a/macros/latex/contrib/tcolorbox/CHANGES.md
+++ b/macros/latex/contrib/tcolorbox/CHANGES.md
@@ -22,6 +22,14 @@ and this project adheres to
 
 
 
+## [5.0.1] - 2021-12-20
+
+### Fixed
+- Library `minted`: Patch `\tcbTemporaryPatchMintedFancyvrb` fixed (issue #158)
+- Fix for issue #157 disabled unbreakability for hbox type boxes (issue #162)
+    This also affected boxes with sidebyside content
+
+
 ## [5.0.0] - 2021-12-16
 
 ### Added
diff --git a/macros/latex/contrib/tcolorbox/README.md b/macros/latex/contrib/tcolorbox/README.md
index 7948f69f80..4a01a52f29 100644
--- a/macros/latex/contrib/tcolorbox/README.md
+++ b/macros/latex/contrib/tcolorbox/README.md
@@ -1,4 +1,4 @@
-# The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+# The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 
 
 > Copyright (c) 2006-2021 by Prof. Dr. Dr. Thomas F. Sturm <thomas dot sturm at unibw dot de>
diff --git a/macros/latex/contrib/tcolorbox/tcbbreakable.code.tex b/macros/latex/contrib/tcolorbox/tcbbreakable.code.tex
index 9b51bcdc38..e572f2834e 100644
--- a/macros/latex/contrib/tcolorbox/tcbbreakable.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcbbreakable.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcbbreakable.code.tex: Code for breakable colorboxes
 %%
 %% -------------------------------------------------------------------------------------------
@@ -17,7 +17,7 @@
 %%
 %% This work consists of all files listed in README
 %%
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \RequirePackage{pdfcol}
 \pdfcolInitStack{tcb@breakable}
@@ -928,15 +928,18 @@
 \tcbset{%
   breakable@true/.code={%
     \tcb@isbreakabletrue%
+    \tcb@sidebysidefalse%
     \let\tcb@defToTotalHeight=\tcb@defToTotalHeightBreakable},
   breakable@unlimited/.code={%
     \tcb@isbreakabletrue%
+    \tcb@sidebysidefalse%
     \let\tcb@defToTotalHeight=\tcb@defToTotalHeightUnlimited},
   breakable/.style={breakable@#1},
   breakable/.default=true,%
   unbreakable/.style={breakable=false},%
   enforce breakable/.code={%
     \tcb@isbreakabletrue%
+    \tcb@sidebysidefalse%
     \let\tcb@defToTotalHeight=\tcb@defToTotalHeightBreakable},
   title after break/.store in=\kvtcb@followingtitle,%
   notitle after break/.style={title after break=},%
diff --git a/macros/latex/contrib/tcolorbox/tcbdocumentation.code.tex b/macros/latex/contrib/tcolorbox/tcbdocumentation.code.tex
index 1c9689d7a7..60f9990277 100644
--- a/macros/latex/contrib/tcolorbox/tcbdocumentation.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcbdocumentation.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcbdocumentation.code.tex: Code for LaTeX documentations
 %%
 %% -------------------------------------------------------------------------------------------
@@ -17,7 +17,7 @@
 %%
 %% This work consists of all files listed in README
 %%
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \tcbuselibrary{listings,skins,xparse,external,raster}
 
diff --git a/macros/latex/contrib/tcolorbox/tcbexternal.code.tex b/macros/latex/contrib/tcolorbox/tcbexternal.code.tex
index fedb6fc58c..7f78d61f52 100644
--- a/macros/latex/contrib/tcolorbox/tcbexternal.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcbexternal.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcbexternal.code.tex: Code for externalization
 %%
 %% -------------------------------------------------------------------------------------------
@@ -17,7 +17,7 @@
 %%
 %% This work consists of all files listed in README
 %%
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \tcbuselibrary{pro@cessing}
 
diff --git a/macros/latex/contrib/tcolorbox/tcbfitting.code.tex b/macros/latex/contrib/tcolorbox/tcbfitting.code.tex
index d65e520c9b..8a1a39963f 100644
--- a/macros/latex/contrib/tcolorbox/tcbfitting.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcbfitting.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcbfitting.code.tex: Code for fit boxes
 %%
 %% -------------------------------------------------------------------------------------------
@@ -18,7 +18,7 @@
 %% This work consists of all files listed in README
 %%
 %\makeatletter
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \newdimen\tcbfitdim
 \newdimen\tcb@lowerfitdim
@@ -253,7 +253,6 @@
 }%
 
 \long\def\tcbox@inner@fitbox#1{%
-  \tcbset{breakable@false,sidebyside=false}%
   \let\tcb@space\tcb@zpt%
   \let\tcb@val@raisebase=\tcb@zpt%
   \unless\ifdefined\kvtcb@height@fixed%
diff --git a/macros/latex/contrib/tcolorbox/tcbhooks.code.tex b/macros/latex/contrib/tcolorbox/tcbhooks.code.tex
index 8ae95cee03..a61fa09947 100644
--- a/macros/latex/contrib/tcolorbox/tcbhooks.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcbhooks.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcbhooks.code.tex: Code for adding hooks
 %%
 %% -------------------------------------------------------------------------------------------
@@ -18,7 +18,7 @@
 %% This work consists of all files listed in README
 %%
 %\makeatletter
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \tcbset{%
   before upper app/.code={\appto\kvtcb@before@upper{#1}},%
diff --git a/macros/latex/contrib/tcolorbox/tcblistings.code.tex b/macros/latex/contrib/tcolorbox/tcblistings.code.tex
index b519862468..8235485a0b 100644
--- a/macros/latex/contrib/tcolorbox/tcblistings.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcblistings.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcblistings.code.tex: Code for colorboxes with listings
 %%
 %% -------------------------------------------------------------------------------------------
@@ -18,7 +18,7 @@
 %% This work consists of all files listed in README
 %%
 %\makeatletter
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \RequirePackage{listings}[2007/02/22]
 
diff --git a/macros/latex/contrib/tcolorbox/tcblistingscore.code.tex b/macros/latex/contrib/tcolorbox/tcblistingscore.code.tex
index 3ec7dd5ae5..4068e214ce 100644
--- a/macros/latex/contrib/tcolorbox/tcblistingscore.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcblistingscore.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcblistingscode.code.tex: Auxiliary code for colorboxes with listings
 %%
 %% -------------------------------------------------------------------------------------------
@@ -18,7 +18,7 @@
 %% This work consists of all files listed in README
 %%
 %\makeatletter
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \tcbuselibrary{pro@cessing}
 
diff --git a/macros/latex/contrib/tcolorbox/tcblistingsutf8.code.tex b/macros/latex/contrib/tcolorbox/tcblistingsutf8.code.tex
index 1f1d771f59..c64ef9c42b 100644
--- a/macros/latex/contrib/tcolorbox/tcblistingsutf8.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcblistingsutf8.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcblistingsutf8.code.tex: Code for colorboxes with listings in UTF-8
 %%
 %% -------------------------------------------------------------------------------------------
@@ -17,7 +17,7 @@
 %%
 %% This work consists of all files listed in README
 %%
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \tcbuselibrary{listings}
 
diff --git a/macros/latex/contrib/tcolorbox/tcbmagazine.code.tex b/macros/latex/contrib/tcolorbox/tcbmagazine.code.tex
index ca10489bee..8db9256b13 100644
--- a/macros/latex/contrib/tcolorbox/tcbmagazine.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcbmagazine.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcbmagazine.code.tex: Code for box sets and magazine styles
 %%
 %% -------------------------------------------------------------------------------------------
@@ -17,7 +17,7 @@
 %%
 %% This work consists of all files listed in README
 %%
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \tcbuselibrary{breakable}
 
diff --git a/macros/latex/contrib/tcolorbox/tcbminted.code.tex b/macros/latex/contrib/tcolorbox/tcbminted.code.tex
index 6c3a2eea6b..5197990109 100644
--- a/macros/latex/contrib/tcolorbox/tcbminted.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcbminted.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcbminted.code.tex: Code for colorboxes with listings
 %%
 %% -------------------------------------------------------------------------------------------
@@ -18,7 +18,7 @@
 %% This work consists of all files listed in README
 %%
 %\makeatletter
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \RequirePackage{minted}[2011/09/17]
 
@@ -36,11 +36,11 @@
     % patch for fivesum computation
     \xpatchcmd*\minted@pygmentize%
       {\ifx\FancyVerbStartNum\z@ 0\else\FancyVerbStartNum\fi}%
-      {\minted@use@FancyVerbStartNum}%
+      {\minted@use@FancyVerbStartNum\relax}%
       {}{}%
     \xpatchcmd*\minted@pygmentize%
       {\ifx\FancyVerbStopNum\z@ 0\else\FancyVerbStopNum\fi}%
-      {\minted@use@FancyVerbStopNum}%
+      {\minted@use@FancyVerbStopNum\relax}%
       {}{}%
     % patch for option "autogobble"
     \xpatchcmd\minted@autogobble%
diff --git a/macros/latex/contrib/tcolorbox/tcbposter.code.tex b/macros/latex/contrib/tcolorbox/tcbposter.code.tex
index 107d1f7bec..399017a7e0 100644
--- a/macros/latex/contrib/tcolorbox/tcbposter.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcbposter.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcbposter.code.tex: Code for posters
 %%
 %% -------------------------------------------------------------------------------------------
@@ -17,7 +17,7 @@
 %%
 %% This work consists of all files listed in README
 %%
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \tcbuselibrary{breakable,magazine,skins,fitting}
 
diff --git a/macros/latex/contrib/tcolorbox/tcbprocessing.code.tex b/macros/latex/contrib/tcolorbox/tcbprocessing.code.tex
index d23d783885..b776656cf4 100644
--- a/macros/latex/contrib/tcolorbox/tcbprocessing.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcbprocessing.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcbprocessing.code.tex: Code for conditional processing
 %%
 %% -------------------------------------------------------------------------------------------
@@ -17,7 +17,7 @@
 %%
 %% This work consists of all files listed in README
 %%
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \RequirePackage{pdftexcmds}
 \RequirePackage{shellesc}
diff --git a/macros/latex/contrib/tcolorbox/tcbraster.code.tex b/macros/latex/contrib/tcolorbox/tcbraster.code.tex
index 350f949466..7cf3d8db2a 100644
--- a/macros/latex/contrib/tcolorbox/tcbraster.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcbraster.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcbskinsjigsaw.code.tex: Code for colorboxes with different skins
 %%
 %% -------------------------------------------------------------------------------------------
@@ -17,7 +17,7 @@
 %%
 %% This work consists of all files listed in README
 %%
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \newcounter{tcbrastercolumn}
 \newcounter{tcbrasterrow}
diff --git a/macros/latex/contrib/tcolorbox/tcbskins.code.tex b/macros/latex/contrib/tcolorbox/tcbskins.code.tex
index 0aaa34246d..40e2704067 100644
--- a/macros/latex/contrib/tcolorbox/tcbskins.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcbskins.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcbskins.code.tex: Code for colorboxes with different skins
 %%
 %% -------------------------------------------------------------------------------------------
@@ -17,7 +17,7 @@
 %%
 %% This work consists of all files listed in README
 %%
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \RequirePackage{tikz}[2010/10/13]
 
diff --git a/macros/latex/contrib/tcolorbox/tcbskinsjigsaw.code.tex b/macros/latex/contrib/tcolorbox/tcbskinsjigsaw.code.tex
index 138b4b1bae..3851f4e87e 100644
--- a/macros/latex/contrib/tcolorbox/tcbskinsjigsaw.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcbskinsjigsaw.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcbskinsjigsaw.code.tex: Code for colorboxes with different skins
 %%
 %% -------------------------------------------------------------------------------------------
@@ -17,7 +17,7 @@
 %%
 %% This work consists of all files listed in README
 %%
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \tcbuselibrary{skins}
 
diff --git a/macros/latex/contrib/tcolorbox/tcbtheorems.code.tex b/macros/latex/contrib/tcolorbox/tcbtheorems.code.tex
index 12a415fa4e..2d8f2caa79 100644
--- a/macros/latex/contrib/tcolorbox/tcbtheorems.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcbtheorems.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcbtheorems.code.tex: Code for theorems in colorboxes
 %%
 %% -------------------------------------------------------------------------------------------
@@ -18,7 +18,7 @@
 %% This work consists of all files listed in README
 %%
 %\makeatletter
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \RequirePackage{amsmath}
 
diff --git a/macros/latex/contrib/tcolorbox/tcbvignette.code.tex b/macros/latex/contrib/tcolorbox/tcbvignette.code.tex
index 56a837171e..12cbaae28d 100644
--- a/macros/latex/contrib/tcolorbox/tcbvignette.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcbvignette.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcbvignette.code.tex: Code for ornamental frames
 %%
 %% -------------------------------------------------------------------------------------------
@@ -17,7 +17,7 @@
 %%
 %% This work consists of all files listed in README
 %%
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \tcbuselibrary{skins}
 
diff --git a/macros/latex/contrib/tcolorbox/tcbxparse.code.tex b/macros/latex/contrib/tcolorbox/tcbxparse.code.tex
index cdefe0ab27..15e77b2b75 100644
--- a/macros/latex/contrib/tcolorbox/tcbxparse.code.tex
+++ b/macros/latex/contrib/tcolorbox/tcbxparse.code.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcbxparse.code.tex: Code for xparse features
 %%
 %% -------------------------------------------------------------------------------------------
@@ -18,7 +18,7 @@
 %% This work consists of all files listed in README
 %%
 %\makeatletter
-\tcb@set@library@version{5.0.0}
+\tcb@set@library@version{5.0.1}
 
 \RequirePackage{xparse}[2013/12/31]
 
diff --git a/macros/latex/contrib/tcolorbox/tcolorbox-example-poster.pdf b/macros/latex/contrib/tcolorbox/tcolorbox-example-poster.pdf
index 5141f13bb7..1871f9e64c 100644
--- a/macros/latex/contrib/tcolorbox/tcolorbox-example-poster.pdf
+++ b/macros/latex/contrib/tcolorbox/tcolorbox-example-poster.pdf
diff --git a/macros/latex/contrib/tcolorbox/tcolorbox-example-poster.tex b/macros/latex/contrib/tcolorbox/tcolorbox-example-poster.tex
index ca5965fa4e..696c53d6bc 100644
--- a/macros/latex/contrib/tcolorbox/tcolorbox-example-poster.tex
+++ b/macros/latex/contrib/tcolorbox/tcolorbox-example-poster.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcolorbox-example-poster.tex: a poster example for tcolorbox
 %%
 %% -------------------------------------------------------------------------------------------
diff --git a/macros/latex/contrib/tcolorbox/tcolorbox-example.pdf b/macros/latex/contrib/tcolorbox/tcolorbox-example.pdf
index f204554be2..b3b5ac88d0 100644
--- a/macros/latex/contrib/tcolorbox/tcolorbox-example.pdf
+++ b/macros/latex/contrib/tcolorbox/tcolorbox-example.pdf
diff --git a/macros/latex/contrib/tcolorbox/tcolorbox-example.tex b/macros/latex/contrib/tcolorbox/tcolorbox-example.tex
index 4bce9e1069..80371dbb4a 100644
--- a/macros/latex/contrib/tcolorbox/tcolorbox-example.tex
+++ b/macros/latex/contrib/tcolorbox/tcolorbox-example.tex
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcolorbox-example.tex: an example for tcolorbox
 %%
 %% -------------------------------------------------------------------------------------------
diff --git a/macros/latex/contrib/tcolorbox/tcolorbox-tutorial-poster.pdf b/macros/latex/contrib/tcolorbox/tcolorbox-tutorial-poster.pdf
index 7df55268d2..cc343d1aa5 100644
--- a/macros/latex/contrib/tcolorbox/tcolorbox-tutorial-poster.pdf
+++ b/macros/latex/contrib/tcolorbox/tcolorbox-tutorial-poster.pdf
diff --git a/macros/latex/contrib/tcolorbox/tcolorbox-tutorial-poster.tex b/macros/latex/contrib/tcolorbox/tcolorbox-tutorial-poster.tex
index 07a4e01a24..0db2af1fe9 100644
--- a/macros/latex/contrib/tcolorbox/tcolorbox-tutorial-poster.tex
+++ b/macros/latex/contrib/tcolorbox/tcolorbox-tutorial-poster.tex
@@ -1,5 +1,5 @@
 % \LaTeX-Main\
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcolorbox-tutorial-poster.tex: a tutorial for poster creation with tcolorbox
 %%
 %% -------------------------------------------------------------------------------------------
diff --git a/macros/latex/contrib/tcolorbox/tcolorbox.doc.theorems.tex b/macros/latex/contrib/tcolorbox/tcolorbox.doc.theorems.tex
index 51d680c388..fefe023cc3 100644
--- a/macros/latex/contrib/tcolorbox/tcolorbox.doc.theorems.tex
+++ b/macros/latex/contrib/tcolorbox/tcolorbox.doc.theorems.tex
@@ -497,7 +497,7 @@ My theorem text.
 \enlargethispage*{20mm}
 
 \begin{docTcbKey}[][doc new=2021-12-03]{theorem number}{}{style, no value}
-Prints theorem name without name inside the title.
+Prints theorem number without name inside the title.
 \begin{dispExample}
 \newtcbtheorem[use counter from=mytheo]{sometheorem}{Theorem}%
   {enhanced,colback=white,colframe=red!50!black,fonttitle=\bfseries,
diff --git a/macros/latex/contrib/tcolorbox/tcolorbox.pdf b/macros/latex/contrib/tcolorbox/tcolorbox.pdf
index 482a4a615f..5752a30847 100644
--- a/macros/latex/contrib/tcolorbox/tcolorbox.pdf
+++ b/macros/latex/contrib/tcolorbox/tcolorbox.pdf
diff --git a/macros/latex/contrib/tcolorbox/tcolorbox.sty b/macros/latex/contrib/tcolorbox/tcolorbox.sty
index a60f658eb3..5efef3cce0 100644
--- a/macros/latex/contrib/tcolorbox/tcolorbox.sty
+++ b/macros/latex/contrib/tcolorbox/tcolorbox.sty
@@ -1,4 +1,4 @@
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcolorbox.sty: Text color boxes
 %%
 %% -------------------------------------------------------------------------------------------
@@ -18,8 +18,8 @@
 %% This work consists of all files listed in README
 %%
 \NeedsTeXFormat{LaTeX2e}
-\ProvidesPackage{tcolorbox}[2021/12/16 version 5.0.0 text color boxes]
-\def\tcb@version{5.0.0}
+\ProvidesPackage{tcolorbox}[2021/12/20 version 5.0.1 text color boxes]
+\def\tcb@version{5.0.1}
 
 \RequirePackage{pgf}[2008/01/15]
 \RequirePackage{verbatim}[2003/08/22]
@@ -703,7 +703,12 @@
   extrude top by/.code={\tcbdimto\kvtcb@top{\kvtcb@top+#1}\tcbdimto\kvtcb@bbtop@stand{\kvtcb@bbtop@stand-(#1)}},%
   extrude bottom by/.code={\tcbdimto\kvtcb@bottom{\kvtcb@bottom+#1}\tcbdimto\kvtcb@bbbottom@stand{\kvtcb@bbbottom@stand-(#1)}},%
   extrude by/.style={extrude left by=#1,extrude right by=#1,extrude top by=#1,extrude bottom by=#1},%
-  sidebyside/.is if=tcb@sidebyside,%
+  sidebyside@true/.code={%
+    \tcb@sidebysidetrue%
+    \tcb@isbreakablefalse},%
+  sidebyside@false/.code={\tcb@sidebysidefalse},%
+  sidebyside/.style={sidebyside@#1},%
+  sidebyside/.default=true,%
   sidebyside align/.is choice,%
   sidebyside align/top/.code={\def\kvtcb@sbs@align{top}\def\tcb@box@align##1{}},%
   sidebyside align/center/.code={\def\kvtcb@sbs@align{center}\def\tcb@box@align##1{}},%
@@ -970,7 +975,6 @@
 
 \def\tcb@set@@sidebyside{%
   \iftcb@sidebyside%
-    \tcbset{breakable@false}%
     \def\tcb@minipage{\csname tcb@minipage@\kvtcb@sbs@align\endcsname}%
     \tcbdimto\tcb@w@upper@real{\tcb@w@upper}%
     \tcbdimto\kvtcb@sbs@gap{\kvtcb@sbs@gap}%
@@ -1868,7 +1872,6 @@
 \def\tcb@draw@border#1{}
 
 \long\def\tcbox@inner@hbox#1{%
-  \tcbset{breakable@false,sidebyside=false}%
   \tcb@set@@phantom%
   \colorlet{tcbcol@origin}{.}%
   \tcb@set@color{tcbcolupper}%
@@ -1886,7 +1889,6 @@
 }
 
 \long\def\tcbox@inner@minipage#1{%
-  \tcbset{breakable@false,sidebyside=false}%
   \let\tcb@val@raisebase=\tcb@zpt%
   \tcb@set@@phantom%
   \tcb@set@@title%
@@ -1904,7 +1906,7 @@
 \long\def\tcb@ox#1#2{%
   \begingroup%
   \tcb@layer@inc%
-  \tcb@apply@box@options{#1}\tcb@height@adjust%
+  \tcb@apply@box@options{#1,breakable@false,sidebyside@false}\tcb@height@adjust%
   \csname tcbox@inner@\kvtcb@capture\endcsname{#2}%
   \tcb@layer@dec%
   \endgroup%
diff --git a/macros/latex/contrib/tcolorbox/tcolorbox.tex b/macros/latex/contrib/tcolorbox/tcolorbox.tex
index d7b89ec1ee..b11b1084b8 100644
--- a/macros/latex/contrib/tcolorbox/tcolorbox.tex
+++ b/macros/latex/contrib/tcolorbox/tcolorbox.tex
@@ -1,5 +1,5 @@
 % \LaTeX-Main\
-%% The LaTeX package tcolorbox - version 5.0.0 (2021/12/16)
+%% The LaTeX package tcolorbox - version 5.0.1 (2021/12/20)
 %% tcolorbox.tex: Manual
 %%
 %% -------------------------------------------------------------------------------------------
@@ -44,8 +44,8 @@
 \setlength{\bibitemsep}{\smallskipamount}
 \addbibresource{tcolorbox.doc.bib}
 
-\def\version{5.0.0}%
-\def\datum{2021/12/16}%
+\def\version{5.0.1}%
+\def\datum{2021/12/20}%
 \makeindex
 
 \hypersetup{
@@ -63,7 +63,7 @@
 %\geometry{showframe}
 %\tcbset{draftmode}
 \tcbset{/tcb/external/-}% for final run
-%\includeonly{tcolorbox.doc.listings}
+%\includeonly{tcolorbox.doc.sidebyside}
 
 %\hypersetup{colorlinks=false}
 
diff --git a/macros/latex/contrib/zref-check/CHANGELOG.md b/macros/latex/contrib/zref-check/CHANGELOG.md
index ba18c24d59..2538c91c1d 100644
--- a/macros/latex/contrib/zref-check/CHANGELOG.md
+++ b/macros/latex/contrib/zref-check/CHANGELOG.md
@@ -1,6 +1,13 @@
 # Changelog
 
-## [Unreleased](https://github.com/gusbrs/zref-check/compare/v0.2.2...HEAD)
+## [Unreleased](https://github.com/gusbrs/zref-check/compare/v0.2.3...HEAD)
+
+## [v0.2.3](https://github.com/gusbrs/zref-check/compare/v0.2.2...v0.2.3) (2021-12-20)
+
+### Fixed
+- Use `main` property list for user facing labels in `\zctarget` and
+  `zcregion` environment, so that references made to them with `zref-clever`
+  contain all required properties.
 
 ## [v0.2.2](https://github.com/gusbrs/zref-check/compare/v0.2.1...v0.2.2) (2021-12-07)
 
diff --git a/macros/latex/contrib/zref-check/zref-check-code.pdf b/macros/latex/contrib/zref-check/zref-check-code.pdf
index 684e53eabf..b134184968 100644
--- a/macros/latex/contrib/zref-check/zref-check-code.pdf
+++ b/macros/latex/contrib/zref-check/zref-check-code.pdf
diff --git a/macros/latex/contrib/zref-check/zref-check.dtx b/macros/latex/contrib/zref-check/zref-check.dtx
index fb4e93c857..57f5e26ca4 100644
--- a/macros/latex/contrib/zref-check/zref-check.dtx
+++ b/macros/latex/contrib/zref-check/zref-check.dtx
@@ -561,7 +561,7 @@
 %
 % Identify the package.
 %    \begin{macrocode}
-\ProvidesExplPackage {zref-check} {2021-12-07} {0.2.2}
+\ProvidesExplPackage {zref-check} {2021-12-20} {0.2.3}
   {Flexible cross-references with contextual checks based on zref}
 %    \end{macrocode}
 %
@@ -614,6 +614,9 @@
 % These are the lists of properties to be used by \pkg{zref-check}, that is,
 % the list of properties the references and targets store.  This is the
 % minimum set required, more properties may be added according to options.
+% For labels set with \cs{@@_target_label:n}, that is, user facing labels, we
+% must use the \texttt{main} property list, so that \pkg{zref-clever} can also
+% retrieve the properties it needs to refer to them.
 %    \begin{macrocode}
 \zref@newlist { zrefcheck-check }
 \zref@addprops { zrefcheck-check }
@@ -623,14 +626,6 @@
     zc@abschap ,
     zc@abssec
   }
-\zref@newlist { zrefcheck-target }
-\zref@addprops { zrefcheck-target }
-  {
-    page , % so that \zpageref can refer to it
-    abspage ,
-    zc@abschap ,
-    zc@abssec
-  }
 \zref@newlist { zrefcheck-end }
 \zref@addprops { zrefcheck-end }
   {
@@ -798,10 +793,7 @@
     \@ifpackageloaded { hyperref }
       {
         \bool_if:NT \l_@@_use_hyperref_bool
-          {
-            \RequirePackage { zref-hyperref }
-            \zref@addprop { zrefcheck-target } { anchor }
-          }
+          { \RequirePackage { zref-hyperref } }
       }
       {
         \bool_if:NT \l_@@_warn_hyperref_bool
@@ -974,7 +966,7 @@
 %   according to option \opt{labelcmd}.
 %    \begin{macrocode}
 \cs_new_protected:Npn \@@_target_label:n #1
-  { \zref@labelbylist {#1} { zrefcheck-target } }
+  { \zref@label {#1} }
 %    \end{macrocode}
 % \end{macro}
 %
diff --git a/macros/latex/contrib/zref-check/zref-check.pdf b/macros/latex/contrib/zref-check/zref-check.pdf
index f475161f4c..18d89eb2d9 100644
--- a/macros/latex/contrib/zref-check/zref-check.pdf
+++ b/macros/latex/contrib/zref-check/zref-check.pdf
diff --git a/support/TeX4ht/source/ChangeLog b/support/TeX4ht/source/ChangeLog
index 6c8345696a..faf48e2b6b 100644
--- a/support/TeX4ht/source/ChangeLog
+++ b/support/TeX4ht/source/ChangeLog
@@ -1,3 +1,11 @@
+2021-12-19  Michal Hoftich  <michal.h21@gmail.com>
+
+	* tex4ht-4ht.tex (minted.4ht): redefine Minted  commands that cause issues
+	with TeX4ht documentation.
+
+	* tex4ht-4ht.tex (backref.4ht): added support for the Backref package.
+	https://github.com/michal-h21/tex4ebook/issues/64
+
 2021-12-17  Michal Hoftich  <michal.h21@gmail.com>
 
 	* tex4ht-ooffice.tex (ooffice.4ht): use \ShowPar in \:DefineParagraph,
diff --git a/support/TeX4ht/source/mktex4ht-cnf.tex b/support/TeX4ht/source/mktex4ht-cnf.tex
index 765d72d291..82a970b839 100644
--- a/support/TeX4ht/source/mktex4ht-cnf.tex
+++ b/support/TeX4ht/source/mktex4ht-cnf.tex
@@ -1,4 +1,4 @@
-% $Id: mktex4ht-cnf.tex 951 2021-06-17 16:29:22Z michal_h21 $
+% $Id: mktex4ht-cnf.tex 1034 2021-12-19 13:53:20Z michal_h21 $
 % Manually-maintained file, listing *.4ht files created by tex4ht-4ht.tex.
 % Read by tex4ht-cond4ht.
 %
@@ -22,6 +22,7 @@
 \AddFile{9}{mla}
 \AddFile{6}{biblatex}
 \AddFile{6}{biblatex-chicago}
+\AddFile{6}{backref}
 \AddFile{6}{reading}
 \AddFile{5}{debug}
 \AddFile{5}{footnote-dw}
@@ -222,6 +223,7 @@
 \AddFile{9}{subeqnarray}
 \AddFile{9}{eurosym}
 \AddFile{9}{SIunits}
+\AddFile{9}{siunitx}
 \AddFile{9}{sistyle}
 \AddFile{9}{ushort}
 \AddFile{9}{chapterbib}
@@ -284,6 +286,7 @@
 \AddFile{9}{2up}
 \AddFile{9}{web}
 \AddFile{9}{exerquiz}
+\AddFile{9}{hyperxmp}
 \AddFile{9}{nicefrac}
 \AddFile{9}{multicol}
 \AddFile{2}{lettrine}
diff --git a/support/TeX4ht/source/tex4ht-4ht.tex b/support/TeX4ht/source/tex4ht-4ht.tex
index 7389d9d0ec..1ba356792b 100644
--- a/support/TeX4ht/source/tex4ht-4ht.tex
+++ b/support/TeX4ht/source/tex4ht-4ht.tex
@@ -1,4 +1,4 @@
-% $Id: tex4ht-4ht.tex 1031 2021-12-16 15:13:32Z michal_h21 $
+% $Id: tex4ht-4ht.tex 1035 2021-12-19 22:26:51Z michal_h21 $
 % tex tex4ht-4ht   or   ht tex tex4ht-4ht
 %
 % Copyright 2009-2021 TeX Users Group    
@@ -2754,6 +2754,50 @@ they caused compilation error when the AUX file is loaded.
 >>>
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  
+\SubSection{backref.4ht}
+
+\<backref.4ht\><<< 
+% backref.4ht (|version), generated from |jobname.tex 
+% Copyright 2021 TeX Users Group 
+|<TeX4ht license text|> 
+|<backref definitions|>
+\Hinput{backref} 
+\endinput 
+>>> \AddFile{9}{backref}
+
+\<backref definitions\><<<
+% patch command that inserts backlink destinations
+\pend:defI\Hy@backout{%
+  % prevent duplicate backlink on the same page
+  \ifcsname bk##1\thepage\endcsname\else%
+    % insert link to the page
+    \html:addr\Link-{}{|<haddr prefix|>\last:haddr}\EndLink%
+    % save link to the .xref file
+    \Tag{)Q##1\thepage}{|<haddr prefix|>\last:haddr}%
+    % we need to save the link destination in .xref file
+    % too, otherwise \Link command would issue warning
+    \Tag{)Q|<haddr prefix|>\last:haddr}{\FileNumber}%
+  \fi
+  % declare this backlink destination as used, so we don't 
+  % declare another one with the same name
+  \expandafter\def\csname bk##1\thepage\endcsname{}%
+}
+
+% redefine macro that puts out backlinks
+\def\:tempa#1#2#3{%
+  % test if we saved link to the current bibitem and page
+  \ifTag{)Q\current:back:desc#1}{%
+      \Link{\LikeRef{)Q\current:back:desc#1}}{}#1\EndLink%
+  }% 
+  {#1}% print just page number if there is no saved link
+}%
+\HLet\backrefxxx\:tempa
+
+% save current bibkey for use in \backrefxxx
+\pend:defI\BR@backref{\def\current:back:desc{##1}}
+>>>
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  
 \SubSection{reading.4ht}
 
 \<reading.4ht\><<<
@@ -24496,11 +24540,30 @@ of LaTeX.  The \''\:gobbleII' is for getting rid of the
   }
   {\b:MintedColorbg\medskip\noindent}
 
+|<minted input fixes|>
 
 \Hinput{minted}
 \endinput
 >>> \AddFile{9}{minted}
 
+
+Minted sometimes produces unexpected results. For example, << characters 
+get translated to guilelemets. To prevent that, we define new configuration,
+mintedfixes, where we can redefine macrod used by Minted to produce correct
+results.
+
+\<minted input fixes\><<<
+\NewConfigure{mintedfixes}[1]{\concat:config\a:mintedfixes{#1}}
+\let\a:mintedfixes\empty
+
+\def\:tempa#1{\a:mintedfixes\o:minted@input:{#1}}
+
+\Configure{mintedfixes}{\def\PYGZlt{\textless}\def\PYGZgt{\textgreater}}
+
+\HLet\minted@input\:tempa
+
+>>>
+
 The breaklines option for Minted environments and commands causes source code
 lines to collapse into one line. We try to prevent that by basically disabling
 this option.
diff --git a/systems/texlive/tlnet/tlpkg/installer/ctan-mirrors.pl b/systems/texlive/tlnet/tlpkg/installer/ctan-mirrors.pl
index fc02e1238e..978bef63b9 100644
--- a/systems/texlive/tlnet/tlpkg/installer/ctan-mirrors.pl
+++ b/systems/texlive/tlnet/tlpkg/installer/ctan-mirrors.pl
@@ -152,6 +152,7 @@ $mirrors = {
       'https://ctan.ijs.si/tex-archive/' => 1,
     },
     'Spain' => {
+      'https://ctan.javinator9889.com/' => 1,
       'https://osl.ugr.es/CTAN/' => 1,
     },
     'Sweden' => {
@@ -170,6 +171,7 @@ $mirrors = {
       'https://ctan.math.ca/tex-archive/' => 1,
       'https://ctan.mirror.globo.tech/' => 1,
       'https://ctan.mirror.rafal.ca/' => 1,
+      'https://mirror.csclub.uwaterloo.ca/CTAN/' => 1,
       'https://mirror.its.dal.ca/ctan/' => 1,
       'https://muug.ca/mirror/ctan/' => 1,
     },
diff --git a/systems/texlive/tlnet/tlpkg/texlive.tlpdb b/systems/texlive/tlnet/tlpkg/texlive.tlpdb
index 5fc08a4a5e..041abdc26f 100644
--- a/systems/texlive/tlnet/tlpkg/texlive.tlpdb
+++ b/systems/texlive/tlnet/tlpkg/texlive.tlpdb
@@ -26,7 +26,7 @@ depend container_split_src_files/1
 depend frozen/0
 depend minrelease/2016
 depend release/2021
-depend revision/61343
+depend revision/61349
 
 name 00texlive.image
 category TLCore
@@ -4498,7 +4498,7 @@ depend setting_available_architectures:aarch64-linux amd64-freebsd amd64-netbsd
 
 name 00texlive.installer
 category TLCore
-revision 61340
+revision 61345
 shortdesc TeX Live standalone installer package
 longdesc This package defines the files to go into the installer
 longdesc archives (install-tl-unx.tar.gz, install-tl.zip) built by the
@@ -34094,15 +34094,15 @@ catalogue-topics class book-pub chinese
 
 name beebe
 category Package
-revision 60298
+revision 61345
 catalogue biblio
 shortdesc A collection of bibliographies
 relocated 1
 longdesc A collection of BibTeX bibliographies on TeX-related topics
 longdesc (including, for example, spell-checking and SGML). Each
 longdesc includes a LaTeX wrapper file to typeset the bibliography.
-containersize 882492
-containerchecksum 47089239ef01b874a5db4d4bc108c337f7d61074fc877234466f12630cc46fe3a5b65b5a530fbb7c795caea3a2e7444e905d891311d9ada48ec508a97dd05a99
+containersize 882448
+containerchecksum d95597c7afa63585202d1f415073ec6b004d5481bef3fb0307ec10631d18b43a351b7d8b06ed5d92014ea5fc076611b5091a968fb16387974ac2fb0b92744a10
 runfiles size=2191
  RELOC/bibtex/bib/beebe/epodd.bib
  RELOC/bibtex/bib/beebe/font.bib
@@ -109492,7 +109492,7 @@ catalogue-version 1.2
 
 name etbb
 category Package
-revision 60410
+revision 61346
 shortdesc An expansion of Edward Tufte's ET-Bembo family
 relocated 1
 longdesc Based on Daniel Benjamin Miller's XETBook, which expanded
@@ -109503,155 +109503,151 @@ longdesc superior letters and figures, inferior figures, a new capital
 longdesc Sharp S with small caps version, along with macros to activate
 longdesc these features in LaTeX. Both otf and pfb are provided.
 execute addMap ETbb.map
-containersize 994760
-containerchecksum 7adc229b5de1162577ebbe93981d8747841f6bdc32a7075c2fcd39f9d67c8f340b190f65fb0e3121a1fd7054a856436cb6acdf3499a1328390497db5012d18b2
-doccontainersize 223328
-doccontainerchecksum 0ca133284c3208959cafa7ffa4180a3539ce4096d99de9b6fc83807df69a792df2c33fa7b8eb50855652337e5eb2407c2cb7e6b1c33e2ee223187194ae20fdb4
+containersize 1014032
+containerchecksum 40be18cc33e0ef167ddc9bec7c0d96465913766dc5dde3c01414ed4b82012a1d6ee771a1d4f6b28cf8a4aa9beba582518f7380afde0284aeea694002d688ba8c
+doccontainersize 223384
+doccontainerchecksum 523e9343ec6a5157c9f3b3057939a8f3e1a8755e9b53f7a677d414308eaa05e79b44d6dcb11e5265b2aa4bef551cc687878ce6936637c0d172d727869e5c1301
 docfiles size=62
  RELOC/doc/fonts/etbb/ETbb-doc.pdf details="Font samples"
  RELOC/doc/fonts/etbb/ETbb-doc.tex
  RELOC/doc/fonts/etbb/LICENSE
  RELOC/doc/fonts/etbb/README details="Readme"
-runfiles size=2418
+runfiles size=2400
  RELOC/fonts/afm/public/etbb/ETbb-Bold.afm
  RELOC/fonts/afm/public/etbb/ETbb-BoldItalic.afm
  RELOC/fonts/afm/public/etbb/ETbb-Italic.afm
  RELOC/fonts/afm/public/etbb/ETbb-Regular.afm
- RELOC/fonts/enc/dvips/etbb/etbb1_2wngtz.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_3ccbvp.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_5325we.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_77pqsh.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_eqc2ac.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_hah5or.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_hibu6u.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_mgm6re.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_pvrda3.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_rwec2l.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_sp7p3o.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_vtabip.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_w52zjg.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_x5rskw.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_xaqh3v.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_yziesh.enc
- RELOC/fonts/enc/dvips/etbb/etbb1_zxy3n5.enc
- RELOC/fonts/enc/dvips/etbb/etbb_22apno.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_4h6gms.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_55s5uq.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_6b4rhp.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_6bb767.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_cp6bsz.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_frt5zk.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_gcyiic.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_gojfsq.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_hbqmiu.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_ifuncr.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_n6yk3i.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_nvr6ig.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_rluk7r.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_u2xzqd.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_ue3xcj.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_ujerr7.enc
+ RELOC/fonts/enc/dvips/etbb/etbb1_vbmlbb.enc
  RELOC/fonts/enc/dvips/etbb/etbb_242knm.enc
- RELOC/fonts/enc/dvips/etbb/etbb_2wngtz.enc
  RELOC/fonts/enc/dvips/etbb/etbb_33mftd.enc
- RELOC/fonts/enc/dvips/etbb/etbb_3ccbvp.enc
- RELOC/fonts/enc/dvips/etbb/etbb_3jmjat.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_3bao6x.enc
  RELOC/fonts/enc/dvips/etbb/etbb_3li7dq.enc
- RELOC/fonts/enc/dvips/etbb/etbb_3pfdgz.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_3pnwav.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_3rdlap.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_4h6gms.enc
  RELOC/fonts/enc/dvips/etbb/etbb_4hpi45.enc
  RELOC/fonts/enc/dvips/etbb/etbb_4qfaj2.enc
  RELOC/fonts/enc/dvips/etbb/etbb_4sxvu4.enc
- RELOC/fonts/enc/dvips/etbb/etbb_4x2qhb.enc
- RELOC/fonts/enc/dvips/etbb/etbb_5325we.enc
- RELOC/fonts/enc/dvips/etbb/etbb_5cjnk5.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_55s5uq.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_5hqhd4.enc
  RELOC/fonts/enc/dvips/etbb/etbb_5iollt.enc
- RELOC/fonts/enc/dvips/etbb/etbb_6tax72.enc
- RELOC/fonts/enc/dvips/etbb/etbb_77pqsh.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_5ll7zh.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_65swoa.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_6b4rhp.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_6bb767.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_6z6nrw.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_7dlbn4.enc
  RELOC/fonts/enc/dvips/etbb/etbb_7pzsmk.enc
  RELOC/fonts/enc/dvips/etbb/etbb_7t4ywj.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_7tqudy.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_7uz5xh.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_7vqeic.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_agksat.enc
  RELOC/fonts/enc/dvips/etbb/etbb_atf2m5.enc
  RELOC/fonts/enc/dvips/etbb/etbb_ay4ati.enc
- RELOC/fonts/enc/dvips/etbb/etbb_behrx3.enc
- RELOC/fonts/enc/dvips/etbb/etbb_bowihu.enc
- RELOC/fonts/enc/dvips/etbb/etbb_c6gjhm.enc
- RELOC/fonts/enc/dvips/etbb/etbb_chsevo.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_boj3jd.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_brounl.enc
  RELOC/fonts/enc/dvips/etbb/etbb_cluc7m.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_cp6bsz.enc
  RELOC/fonts/enc/dvips/etbb/etbb_cpb6sd.enc
- RELOC/fonts/enc/dvips/etbb/etbb_cpdyi3.enc
- RELOC/fonts/enc/dvips/etbb/etbb_cpixk3.enc
  RELOC/fonts/enc/dvips/etbb/etbb_cq6xx2.enc
- RELOC/fonts/enc/dvips/etbb/etbb_cuqhrj.enc
  RELOC/fonts/enc/dvips/etbb/etbb_cxbogn.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_cyp5f5.enc
  RELOC/fonts/enc/dvips/etbb/etbb_cyyszv.enc
- RELOC/fonts/enc/dvips/etbb/etbb_dcps7k.enc
  RELOC/fonts/enc/dvips/etbb/etbb_dep6cd.enc
- RELOC/fonts/enc/dvips/etbb/etbb_dz2qg3.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_dv2xfw.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_dz2nen.enc
  RELOC/fonts/enc/dvips/etbb/etbb_e3m4fz.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_e7zo2o.enc
  RELOC/fonts/enc/dvips/etbb/etbb_ea2dgh.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_ehl4wc.enc
  RELOC/fonts/enc/dvips/etbb/etbb_elsw3h.enc
- RELOC/fonts/enc/dvips/etbb/etbb_eqc2ac.enc
  RELOC/fonts/enc/dvips/etbb/etbb_f55msl.enc
- RELOC/fonts/enc/dvips/etbb/etbb_f7n52p.enc
- RELOC/fonts/enc/dvips/etbb/etbb_f7rui7.enc
  RELOC/fonts/enc/dvips/etbb/etbb_fpvlkw.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_frt5zk.enc
  RELOC/fonts/enc/dvips/etbb/etbb_ftphfy.enc
- RELOC/fonts/enc/dvips/etbb/etbb_fue2l2.enc
  RELOC/fonts/enc/dvips/etbb/etbb_fwcdph.enc
- RELOC/fonts/enc/dvips/etbb/etbb_gkmjhd.enc
- RELOC/fonts/enc/dvips/etbb/etbb_gtayjy.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_gcyiic.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_ghqdpy.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_gojfsq.enc
  RELOC/fonts/enc/dvips/etbb/etbb_gtqfg2.enc
  RELOC/fonts/enc/dvips/etbb/etbb_h4dyum.enc
- RELOC/fonts/enc/dvips/etbb/etbb_hah5or.enc
- RELOC/fonts/enc/dvips/etbb/etbb_hcre2c.enc
- RELOC/fonts/enc/dvips/etbb/etbb_hibu6u.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_hbqmiu.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_hdnox5.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_hn62ay.enc
  RELOC/fonts/enc/dvips/etbb/etbb_i5ezvi.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_icp3zk.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_ifuncr.enc
  RELOC/fonts/enc/dvips/etbb/etbb_ihmnlr.enc
- RELOC/fonts/enc/dvips/etbb/etbb_imedjx.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_j4gzyc.enc
  RELOC/fonts/enc/dvips/etbb/etbb_j7myeh.enc
- RELOC/fonts/enc/dvips/etbb/etbb_kkjcws.enc
- RELOC/fonts/enc/dvips/etbb/etbb_ko4aue.enc
- RELOC/fonts/enc/dvips/etbb/etbb_kuig7z.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_jejpug.enc
  RELOC/fonts/enc/dvips/etbb/etbb_kvzzr3.enc
- RELOC/fonts/enc/dvips/etbb/etbb_lchj55.enc
- RELOC/fonts/enc/dvips/etbb/etbb_lfrz6w.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_ladhhj.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_le3wsu.enc
  RELOC/fonts/enc/dvips/etbb/etbb_lolxkk.enc
  RELOC/fonts/enc/dvips/etbb/etbb_m5kdwt.enc
- RELOC/fonts/enc/dvips/etbb/etbb_mgm6re.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_m74he6.enc
  RELOC/fonts/enc/dvips/etbb/etbb_mpvq56.enc
- RELOC/fonts/enc/dvips/etbb/etbb_na6tk5.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_muumxe.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_n5h2ym.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_n6yk3i.enc
  RELOC/fonts/enc/dvips/etbb/etbb_nfh2ow.enc
- RELOC/fonts/enc/dvips/etbb/etbb_nnawaw.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_no4mhs.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_nvfc5y.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_nvr6ig.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_oe3mzn.enc
  RELOC/fonts/enc/dvips/etbb/etbb_ohc25e.enc
  RELOC/fonts/enc/dvips/etbb/etbb_ohvjcv.enc
  RELOC/fonts/enc/dvips/etbb/etbb_oynaqb.enc
  RELOC/fonts/enc/dvips/etbb/etbb_p4wmli.enc
  RELOC/fonts/enc/dvips/etbb/etbb_pijcl4.enc
- RELOC/fonts/enc/dvips/etbb/etbb_pvrda3.enc
- RELOC/fonts/enc/dvips/etbb/etbb_qmwyqz.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_q62n24.enc
  RELOC/fonts/enc/dvips/etbb/etbb_qqjyre.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_qrk72g.enc
  RELOC/fonts/enc/dvips/etbb/etbb_r34xpu.enc
  RELOC/fonts/enc/dvips/etbb/etbb_riohwx.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_rluk7r.enc
  RELOC/fonts/enc/dvips/etbb/etbb_rt4kro.enc
- RELOC/fonts/enc/dvips/etbb/etbb_rwec2l.enc
  RELOC/fonts/enc/dvips/etbb/etbb_rzlqzq.enc
- RELOC/fonts/enc/dvips/etbb/etbb_s2dnn6.enc
- RELOC/fonts/enc/dvips/etbb/etbb_sk3nrp.enc
  RELOC/fonts/enc/dvips/etbb/etbb_skushq.enc
- RELOC/fonts/enc/dvips/etbb/etbb_sp7p3o.enc
- RELOC/fonts/enc/dvips/etbb/etbb_sz3fgd.enc
  RELOC/fonts/enc/dvips/etbb/etbb_tbmtgo.enc
  RELOC/fonts/enc/dvips/etbb/etbb_tif2yn.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_u2xzqd.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_ue3xcj.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_ujerr7.enc
  RELOC/fonts/enc/dvips/etbb/etbb_ujmsnd.enc
- RELOC/fonts/enc/dvips/etbb/etbb_un2f5f.enc
  RELOC/fonts/enc/dvips/etbb/etbb_uoncjt.enc
- RELOC/fonts/enc/dvips/etbb/etbb_v2eodf.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_upf3od.enc
  RELOC/fonts/enc/dvips/etbb/etbb_v6nho7.enc
- RELOC/fonts/enc/dvips/etbb/etbb_vmkycp.enc
- RELOC/fonts/enc/dvips/etbb/etbb_vtabip.enc
- RELOC/fonts/enc/dvips/etbb/etbb_w52zjg.enc
- RELOC/fonts/enc/dvips/etbb/etbb_whnzkz.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_vbmlbb.enc
  RELOC/fonts/enc/dvips/etbb/etbb_wplash.enc
- RELOC/fonts/enc/dvips/etbb/etbb_x5rskw.enc
- RELOC/fonts/enc/dvips/etbb/etbb_xaqh3v.enc
- RELOC/fonts/enc/dvips/etbb/etbb_xdptht.enc
  RELOC/fonts/enc/dvips/etbb/etbb_xe5wuh.enc
  RELOC/fonts/enc/dvips/etbb/etbb_xmn5et.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_xq7qra.enc
  RELOC/fonts/enc/dvips/etbb/etbb_ybjyd4.enc
  RELOC/fonts/enc/dvips/etbb/etbb_ydcfbc.enc
- RELOC/fonts/enc/dvips/etbb/etbb_yhvmm4.enc
  RELOC/fonts/enc/dvips/etbb/etbb_yiqwpu.enc
- RELOC/fonts/enc/dvips/etbb/etbb_yjlloh.enc
  RELOC/fonts/enc/dvips/etbb/etbb_ytzykv.enc
- RELOC/fonts/enc/dvips/etbb/etbb_yziesh.enc
  RELOC/fonts/enc/dvips/etbb/etbb_yzoycr.enc
- RELOC/fonts/enc/dvips/etbb/etbb_yzujze.enc
- RELOC/fonts/enc/dvips/etbb/etbb_z6brcn.enc
+ RELOC/fonts/enc/dvips/etbb/etbb_ziol45.enc
  RELOC/fonts/enc/dvips/etbb/etbb_zpkt7y.enc
- RELOC/fonts/enc/dvips/etbb/etbb_zxy3n5.enc
  RELOC/fonts/map/dvips/etbb/ETbb.map
  RELOC/fonts/opentype/public/etbb/ETbb-Bold.otf
  RELOC/fonts/opentype/public/etbb/ETbb-BoldItalic.otf
@@ -110347,7 +110343,7 @@ runfiles size=2418
 catalogue-ctan /fonts/etbb
 catalogue-license mit lppl1.3
 catalogue-topics font font-body font-proportional font-type1 font-otf font-serif font-supp font-t1enc
-catalogue-version 1.053
+catalogue-version 1.054
 
 name etdipa
 category Package
@@ -267100,21 +267096,21 @@ catalogue-version 0.8.3
 
 name schulmathematik
 category Package
-revision 58359
+revision 61347
 shortdesc Commands and document classes for German-speaking teachers of mathematics and physics
 relocated 1
 longdesc The schulmathematik bundle provides two LaTeX packages and six
 longdesc document classes for German-speaking teachers of mathematics
 longdesc and physics.
-containersize 10188
-containerchecksum 283c5541f876edeea48201cff842d0d4b73ed1fff33f419371c9fd721cbd1711203f3449874d57573285a8e0e9a7386fcf586444030fee3c587b9d830ca2235d
-doccontainersize 201444
-doccontainerchecksum 1f360107f14c7261c25c3806b4c5b762ec65b0d1818c4cc450784338119f0148b0319cdc3981c7cb29c776aa309f3b90782f28abde3c4b5cffe16e51bbc28f39
-docfiles size=63
+containersize 11544
+containerchecksum e24ba267da9a9fd00b1de1ef6e878f36be2df2e5860d8e8af65a2c3d91ab04dda143f1aa69bfefc2ccef1970e2149a4fcf2a8ba0d92a0f062a71526d19529795
+doccontainersize 217656
+doccontainerchecksum b648305dc48871c5ba4b52af333bad7873038cae7740559383199715fa10e6ed0bb23d3972d80081b9d57857bde80d12fba55730b9af09f6733b0397d9f416a4
+docfiles size=67
  RELOC/doc/latex/schulmathematik/README details="Readme"
  RELOC/doc/latex/schulmathematik/schulmathematik.pdf details="Package documentation"
  RELOC/doc/latex/schulmathematik/schulmathematik.tex
-runfiles size=17
+runfiles size=18
  RELOC/tex/latex/schulmathematik/schulma-ab.cls
  RELOC/tex/latex/schulmathematik/schulma-gutachten.cls
  RELOC/tex/latex/schulmathematik/schulma-klausur.cls
@@ -267126,7 +267122,7 @@ runfiles size=17
 catalogue-ctan /macros/latex/contrib/schulmathematik
 catalogue-license lppl1.3
 catalogue-topics maths physics teaching
-catalogue-version 1.1
+catalogue-version 1.2
 
 name schulschriften
 category Package
@@ -287661,7 +287657,7 @@ binfiles arch=x86_64-solaris size=1
 
 name tex4ht
 category Package
-revision 61343
+revision 61349
 shortdesc Convert (La)TeX to HTML/XML
 longdesc A converter from TeX and LaTeX to SGML-based formats such as
 longdesc (X)HTML, MathML, OpenDocument, and Docbook, providing a
@@ -287682,10 +287678,10 @@ longdesc files from them is nontrivial, and generally done with the
 longdesc Makefile in development, from which the TeX4ht package in TeX
 longdesc Live is updated.
 depend tex4ht.ARCH
-containersize 936632
-containerchecksum 79d673dc46e8103cbff4b0b83af27aec76b892eae5f5db71061afbc20f90437ff925bca67f19ad299bc36f20b68c6c60ad4f1e63a36ebcf44131a39654f00929
+containersize 937004
+containerchecksum e51cbd46fcbf4d3243835662158c495c161e2ba3f3bec3b3e7424e3bb0ee16133651c84177e0c8953c56177c706d0010b51d022c3940a6f6caab3a58613084cc
 doccontainersize 136384
-doccontainerchecksum 4362b50732ac77e6b454f1ce9e6f48a3d0272462eb94c8ecc85e1b1ca9da8a0cf37cc7e47cfa3743094648581cc5a2bb4fd4ae1a776306d54445986c0d0c37c3
+doccontainerchecksum 40e6b24a35f6ccb86689a64d83b87cfd45d19c9204b21091f82259956457f4d46bb5f3146ff206a953840f900e4b8a5722033841216913bd67b81ebd19a55544
 docfiles size=260
  texmf-dist/doc/generic/tex4ht/Makefile
  texmf-dist/doc/generic/tex4ht/README details="Readme"
@@ -287757,8 +287753,8 @@ docfiles size=260
  texmf-dist/doc/generic/tex4ht/mn56.html
  texmf-dist/doc/generic/tex4ht/mn5x.png
  texmf-dist/doc/generic/tex4ht/mn6x.png
-srccontainersize 1238300
-srccontainerchecksum f90c5275c3ae38c91ff14f38a080febf520f0fdf003f069361bc579256c3b8d43e31c73d3d183b6b89827a60f9e264c0ded32bd1fc348ffafcd2628943ab66f6
+srccontainersize 1229728
+srccontainerchecksum 2315ebbfe2a054418e6732e48812e84e954c7b6db2959c08febaa488b06c598ea208923d46fae9aaa13365f68eddc9e309988a8eded1b17260b10b8515797d2b
 srcfiles size=3724
  texmf-dist/source/generic/tex4ht/ChangeLog
  texmf-dist/source/generic/tex4ht/Makefile
@@ -287832,7 +287828,7 @@ srcfiles size=3724
  texmf-dist/source/generic/tex4ht/tex4ht-xhtmml-xtpipes.tex
  texmf-dist/source/generic/tex4ht/wripro.tex
  texmf-dist/source/generic/tex4ht/xtpipes.tex
-runfiles size=10610
+runfiles size=10611
  texmf-dist/scripts/tex4ht/ht.sh
  texmf-dist/scripts/tex4ht/htcontext.sh
  texmf-dist/scripts/tex4ht/htcopy.pl
@@ -287896,6 +287892,7 @@ runfiles size=10610
  texmf-dist/tex/generic/tex4ht/authblk.4ht
  texmf-dist/tex/generic/tex4ht/awesomebox.4ht
  texmf-dist/tex/generic/tex4ht/babel.4ht
+ texmf-dist/tex/generic/tex4ht/backref.4ht
  texmf-dist/tex/generic/tex4ht/beamer.4ht
  texmf-dist/tex/generic/tex4ht/beamerbasefont.4ht
  texmf-dist/tex/generic/tex4ht/beamerbasetoc.4ht
@@ -297670,7 +297667,7 @@ docfiles size=376
 
 name texlive-scripts
 category TLCore
-revision 61340
+revision 61345
 shortdesc TeX Live infrastructure programs
 longdesc Includes install-tl, tl-portable, rungs, etc.; not needed for
 longdesc tlmgr to run but still ours. Not included in tlcritical.
@@ -297678,10 +297675,10 @@ depend texlive-scripts.ARCH
 depend texlive.infra
 execute addMap mathpple.map
 postaction shortcut type=menu name="TeX Live command-line"   cmd=TEXDIR/tlpkg/installer/tl-cmd.bat
-containersize 108216
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diff --git a/systems/texlive/tlnet/tlpkg/texlive.tlpdb.md5 b/systems/texlive/tlnet/tlpkg/texlive.tlpdb.md5
index 0b012b91d3..cdc92f76e8 100644
--- a/systems/texlive/tlnet/tlpkg/texlive.tlpdb.md5
+++ b/systems/texlive/tlnet/tlpkg/texlive.tlpdb.md5
@@ -1 +1 @@
-3f0a79ef0d47513952329d55cfaff019  texlive.tlpdb
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diff --git a/systems/texlive/tlnet/tlpkg/texlive.tlpdb.sha512 b/systems/texlive/tlnet/tlpkg/texlive.tlpdb.sha512
index 92b72bb883..2b0e7f49d8 100644
--- a/systems/texlive/tlnet/tlpkg/texlive.tlpdb.sha512
+++ b/systems/texlive/tlnet/tlpkg/texlive.tlpdb.sha512
@@ -1 +1 @@
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diff --git a/systems/texlive/tlnet/tlpkg/texlive.tlpdb.sha512.asc b/systems/texlive/tlnet/tlpkg/texlive.tlpdb.sha512.asc
index 5eb8229c1d..3317c354ef 100644
--- a/systems/texlive/tlnet/tlpkg/texlive.tlpdb.sha512.asc
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diff --git a/systems/texlive/tlnet/tlpkg/texlive.tlpdb.xz b/systems/texlive/tlnet/tlpkg/texlive.tlpdb.xz
index 1d61c92685..c77888f348 100644
--- a/systems/texlive/tlnet/tlpkg/texlive.tlpdb.xz
+++ b/systems/texlive/tlnet/tlpkg/texlive.tlpdb.xz
diff --git a/systems/win32/miktex/tm/packages/next/pr.ini b/systems/win32/miktex/tm/packages/next/pr.ini
index 5146d9b413..9c602e029a 100644
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+++ b/systems/win32/miktex/tm/packages/next/pr.ini
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diff --git a/timestamp b/timestamp
index bfd76c869a..fa6e465c8e 100644
--- a/timestamp
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@@ -2,4 +2,4 @@
 #   The source CTAN of this site's material:
 dante.ctan.org
 #   The year-month-day-hour-minute of this site's material:
-2021-12-20-02-02
+2021-12-21-02-02