4 files changed, 597 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/latex/asymptote/asycolors.sty b/Master/texmf-dist/tex/latex/asymptote/asycolors.sty
new file mode 100644
index 00000000000..31031c730fd
--- /dev/null
+++ b/Master/texmf-dist/tex/latex/asymptote/asycolors.sty
@@ -0,0 +1,72 @@
+\usepackage{color}
+\definecolor{cyan}{cmyk}{1,0,0,0}
+\definecolor{magenta}{cmyk}{0,1,0,0}
+\definecolor{yellow}{cmyk}{0,0,1,0}
+\definecolor{black}{cmyk}{0,0,0,1}
+
+\definecolor{white}{cmyk}{0,0,0,0}
+\definecolor{gray}{cmyk}{0,0,0,0.5}
+
+\definecolor{red}{cmyk}{0,1,1,0}
+\definecolor{green}{cmyk}{1,0,1,0}
+\definecolor{blue}{cmyk}{1,1,0,0}
+
+\definecolor{palered}{cmyk}{0,0.25,0.25,0}
+\definecolor{palegreen}{cmyk}{0.25,0,0.25,0}
+\definecolor{paleblue}{cmyk}{0.25,0.25,0,0}
+\definecolor{palecyan}{cmyk}{0.25,0,0,0}
+\definecolor{palemagenta}{cmyk}{0,0.25,0,0}
+\definecolor{paleyellow}{cmyk}{0,0,0.25,0}
+\definecolor{palegray}{cmyk}{0,0,0,0.05}
+\definecolor{lightred}{cmyk}{0,0.5,0.5,0}
+\definecolor{lightgreen}{cmyk}{0.5,0,0.5,0}
+\definecolor{lightblue}{cmyk}{0.5,0.5,0,0}
+\definecolor{lightcyan}{cmyk}{0.5,0,0,0}
+\definecolor{lightmagenta}{cmyk}{0,0.5,0,0}
+\definecolor{lightyellow}{cmyk}{0,0,0.5,0}
+\definecolor{lightgray}{cmyk}{0,0,0,0.1}
+\definecolor{mediumred}{cmyk}{0,0.75,0.75,0}
+\definecolor{mediumgreen}{cmyk}{0.75,0,0.75,0}
+\definecolor{mediumblue}{cmyk}{0.75,0.75,0,0}
+\definecolor{mediumcyan}{cmyk}{0.75,0,0,0}
+\definecolor{mediummagenta}{cmyk}{0,0.75,0,0}
+\definecolor{mediumyellow}{cmyk}{0,0,0.75,0}
+\definecolor{mediumgray}{cmyk}{0,0,0,0.25}
+\definecolor{heavyred}{cmyk}{0,1,1,0.25}
+\definecolor{heavygreen}{cmyk}{1,0,1,0.25}
+\definecolor{heavyblue}{cmyk}{1,1,0,0.25}
+\definecolor{heavycyan}{cmyk}{1,0,0,0.25}
+\definecolor{heavymagenta}{cmyk}{0,1,0,0.25}
+\definecolor{lightolive}{cmyk}{0,0,1,0.25}
+\definecolor{heavygray}{cmyk}{0,0,0,0.75}
+\definecolor{deepred}{cmyk}{0,1,1,0.5}
+\definecolor{deepgreen}{cmyk}{1,0,1,0.5}
+\definecolor{deepblue}{cmyk}{1,1,0,0.5}
+\definecolor{deepcyan}{cmyk}{1,0,0,0.5}
+\definecolor{deepmagenta}{cmyk}{0,1,0,0.5}
+\definecolor{olive}{cmyk}{0,0,1,0.5}
+\definecolor{deepgray}{cmyk}{0,0,0,0.9}
+\definecolor{darkred}{cmyk}{0,1,1,0.75}
+\definecolor{darkgreen}{cmyk}{1,0,1,0.75}
+\definecolor{darkblue}{cmyk}{1,1,0,0.75}
+\definecolor{darkcyan}{cmyk}{1,0,0,0.75}
+\definecolor{darkmagenta}{cmyk}{0,1,0,0.75}
+\definecolor{darkolive}{cmyk}{0,0,1,0.75}
+\definecolor{darkgray}{cmyk}{0,0,0,0.95}
+\definecolor{orange}{cmyk}{0,0.5,1,0}
+\definecolor{fuchsia}{cmyk}{0,1,0.5,0}
+\definecolor{chartreuse}{cmyk}{0.5,0,1,0}
+\definecolor{springgreen}{cmyk}{1,0,0.5,0}
+\definecolor{purple}{cmyk}{0.5,1,0,0}
+\definecolor{royalblue}{cmyk}{1,0.5,0,0}
+\definecolor{salmon}{cmyk}{0,0.5,0.5,0}
+\definecolor{brown}{cmyk}{0,1,1,0.5}
+\definecolor{darkbrown}{cmyk}{0,1,1,0.75}
+\definecolor{pink}{cmyk}{0,0.25,0,0}
+\definecolor{palegrey}{cmyk}{0,0,0,0.05}
+\definecolor{lightgrey}{cmyk}{0,0,0,0.1}
+\definecolor{mediumgrey}{cmyk}{0,0,0,0.25}
+\definecolor{grey}{cmyk}{0,0,0,0.5}
+\definecolor{heavygrey}{cmyk}{0,0,0,0.5}
+\definecolor{deepgrey}{cmyk}{0,0,0,0.9}
+\definecolor{darkgrey}{cmyk}{0,0,0,0.95}
diff --git a/Master/texmf-dist/tex/latex/asymptote/asymptote.sty b/Master/texmf-dist/tex/latex/asymptote/asymptote.sty
new file mode 100644
index 00000000000..4433f6d607e
--- /dev/null
+++ b/Master/texmf-dist/tex/latex/asymptote/asymptote.sty
@@ -0,0 +1,394 @@
+%%
+%% This is file `asymptote.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% asy-latex.dtx  (with options: `pkg')
+%% ____________________________
+%% The ASYMPTOTE package
+%% 
+%% (C) 2003 Tom Prince
+%% (C) 2003-2010 John Bowman
+%% (C) 2010 Will Robertson
+%% 
+%% Adapted from comment.sty
+%% 
+%% Licence: GPL2+
+%% 
+\ProvidesPackage{asymptote}
+  [2011/11/29 v1.26 Asymptote style file for LaTeX]
+\def\Asymptote{{\tt Asymptote}}
+\InputIfFileExists{\jobname.pre}{}{}
+\newbox\ASYbox
+\newcounter{asy}
+\newwrite\AsyStream
+\newwrite\AsyPreStream
+\newif\ifASYinline
+\newif\ifASYattach
+\newif\ifASYkeepAspect
+\ASYkeepAspecttrue
+\RequirePackage{keyval}
+\RequirePackage{ifthen}
+\RequirePackage{color,graphicx}
+\IfFileExists{ifpdf.sty}{
+  \RequirePackage{ifpdf}
+}{
+  \expandafter\newif\csname ifpdf\endcsname
+  \ifx\pdfoutput\@undefined\else
+    \ifcase\pdfoutput\else
+      \pdftrue
+    \fi
+  \fi
+}
+\IfFileExists{ifxetex.sty}{
+  \RequirePackage{ifxetex}
+}{
+  \expandafter\newif\csname ifxetex\endcsname
+  \ifx\XeTeXversion\@undefined\else
+    \xetextrue
+  \fi
+}
+\IfFileExists{catchfile.sty}{
+  \RequirePackage{catchfile}
+}{
+  \newcommand\CatchFileDef[3]{%
+    \begingroup
+    \everyeof{%
+      \ENDCATCHFILEMARKER
+      \noexpand
+    }%
+    \long\def\@tempa####1\ENDCATCHFILEMARKER{%
+      \endgroup
+      \def##1{####1}%
+    }%
+    ##3%
+    \expandafter\@tempa\@@input ##2\relax
+  }
+}
+\newif\if@asy@attachfile@loaded
+\AtBeginDocument{%
+  \@ifpackageloaded{attachfile2}{\@asy@attachfile@loadedtrue}{}%
+  \let\asy@check@attachfile\asy@check@attachfile@loaded
+}
+\newcommand\asy@check@attachfile@loaded{%
+  \if@asy@attachfile@loaded\else
+    \PackageError{asymptote}{You must load the attachfile2 package}{^^J%
+      You have requested the [attach] option for some or all of your^^J%
+      Asymptote graphics, which requires the attachfile2 package.^^J%
+      Please load it in the document preamble.^^J%
+    }%
+  \fi
+}
+\newcommand\asy@check@attachfile{%
+  \AtBeginDocument{\asy@check@attachfile@loaded}%
+  \let\asy@check@attachfile\@empty
+}
+\def\csarg#1#2{\expandafter#1\csname#2\endcsname}
+\DeclareOption{inline}{%
+  \ASYinlinetrue
+}
+\DeclareOption{attach}{%
+  \asy@check@attachfile
+  \ASYattachtrue
+}
+\ProcessOptions*
+\def\asydir{}
+\def\ASYprefix{}
+\newif\ifASYPDF
+\ifxetex
+  \ASYPDFtrue
+\else
+  \ifpdf
+    \ASYPDFtrue
+  \fi
+\fi
+\ifASYPDF
+  \def\AsyExtension{pdf}
+\else
+  \def\AsyExtension{eps}
+\fi
+\def\unquoteJobname#1"#2"#3\relax{%
+  \def\rawJobname{#1}%
+  \ifx\rawJobname\empty
+    \def\rawJobname{#2}%
+  \fi
+}
+\expandafter\unquoteJobname\jobname""\relax
+\def\fixstar#1*#2\relax{%
+  \def\argtwo{#2}%
+  \ifx\argtwo\empty
+    \gdef\Jobname{#1}%
+  \else
+    \fixstar#1-#2\relax
+  \fi
+}
+\expandafter\fixstar\rawJobname*\relax
+\def\Ginclude@eps#1{%
+  \message{<#1>}%
+  \bgroup
+  \def\@tempa{!}%
+  \dimen@\Gin@req@width
+  \dimen@ii.1bp\relax
+  \divide\dimen@\dimen@ii
+  \@tempdima\Gin@req@height
+  \divide\@tempdima\dimen@ii
+    \special{PSfile=#1\space
+      llx=\Gin@llx\space
+      lly=\Gin@lly\space
+      urx=\Gin@urx\space
+      ury=\Gin@ury\space
+      \ifx\Gin@scalex\@tempa\else rwi=\number\dimen@\space\fi
+      \ifx\Gin@scaley\@tempa\else rhi=\number\@tempdima\space\fi
+      \ifGin@clip clip\fi}%
+  \egroup
+}
+\immediate\openout\AsyPreStream=\jobname.pre\relax
+\AtEndDocument{\immediate\closeout\AsyPreStream}
+\def\WriteAsyLine#1{%
+  \immediate\write\AsyStream{\detokenize{#1}}%
+}
+\def\globalASYdefs{}
+\def\WriteGlobalAsyLine#1{%
+  \expandafter\g@addto@macro
+  \expandafter\globalASYdefs
+  \expandafter{\detokenize{#1^^J}}%
+}
+\def\ProcessAsymptote#1{%
+  \begingroup
+  \def\CurrentAsymptote{#1}%
+  \let\do\@makeother \dospecials
+  \@makeother\^^L% and whatever other special cases
+  \catcode`\ =10
+  \endlinechar`\^^M \catcode`\^^M=12 \xAsymptote
+}
+\begingroup
+  \catcode`\^^M=12 \endlinechar=-1\relax%
+  \gdef\xAsymptote{%
+    \expandafter\ProcessAsymptoteLine%
+  }
+  \gdef\ProcessAsymptoteLine#1^^M{%
+    \def\@tempa{#1}%
+    {%
+      \escapechar=-1\relax%
+      \xdef\@tempb{\string\\end\string\{\CurrentAsymptote\string\}}%
+    }%
+    \ifx\@tempa\@tempb%
+      \edef\next{\endgroup\noexpand\end{\CurrentAsymptote}}%
+    \else%
+      \ThisAsymptote{#1}%
+      \let\next\ProcessAsymptoteLine%
+    \fi%
+    \next%
+  }
+\endgroup
+\newcommand\asy[1][]{%
+  \stepcounter{asy}%
+  \setkeys{ASYkeys}{#1}%
+  \ifASYattach
+    \ASYinlinefalse
+  \fi
+  \ifx\asydir\empty\else
+    \def\ASYprefix{\asydir/}%
+  \fi
+  \immediate\write\AsyPreStream{%
+    \noexpand\InputIfFileExists{%
+      \ASYprefix\noexpand\jobname-\the\c@asy.pre}{}{}%
+  }
+  \asy@write@graphic@header
+  \let\ThisAsymptote\WriteAsyLine
+  \ProcessAsymptote{asy}%
+}
+\def\endasy{%
+  \asy@finalise@stream
+  \asy@input@graphic
+}
+\def\asy@write@graphic@header{%
+  \immediate\openout\AsyStream=\ASYprefix\jobname-\the\c@asy.asy\relax
+  \gdef\AsyFile{\ASYprefix\Jobname-\the\c@asy}%
+  \immediate\write\AsyStream{%
+    if(!settings.multipleView) settings.batchView=false;^^J%
+    \ifxetex
+      settings.tex="xelatex";^^J%
+    \else\ifASYPDF
+        settings.tex="pdflatex";^^J%
+    \fi\fi
+    \ifASYinline
+      settings.inlinetex=true;^^J%
+      deletepreamble();^^J%
+    \fi
+    defaultfilename="\Jobname-\the\c@asy";^^J%
+    if(settings.render < 0) settings.render=4;^^J%
+    settings.outformat="";^^J%
+    \ifASYattach
+      settings.inlineimage=false;^^J%
+      settings.embed=false;^^J%
+      settings.toolbar=true;^^J%
+    \else
+      settings.inlineimage=true;^^J%
+      settings.embed=true;^^J%
+      settings.toolbar=false;^^J%
+      viewportmargin=(2,2);^^J%
+    \fi
+    \globalASYdefs
+  }%
+}
+\def\asy@expand@keepAspect{%
+  \ifASYkeepAspect keepAspect=true%
+  \else keepAspect=false%
+  \fi%
+}
+\def\asy@finalise@stream{%
+  \ifx\ASYwidth\@empty
+    \ifx\ASYheight\@empty
+      % write nothing!
+    \else
+      \immediate\write\AsyStream{size(0,\ASYheight,\asy@expand@keepAspect);}%
+    \fi
+  \else
+    \ifx\ASYheight\@empty
+      \immediate\write\AsyStream{size(\ASYwidth,0,\asy@expand@keepAspect);}%
+    \else
+      \immediate\write\AsyStream{size(\ASYwidth,\ASYheight,\asy@expand@keepAspect);}%
+    \fi
+  \fi
+  \ifx\ASYviewportwidth\@empty
+    \ifx\ASYviewportheight\@empty
+      % write nothing!
+    \else
+      \immediate\write\AsyStream{viewportsize=(0,\ASYviewportheight);}%
+    \fi
+  \else
+    \ifx\ASYviewportheight\@empty
+      \immediate\write\AsyStream{viewportsize=(\ASYviewportwidth,0);}%
+    \else
+      \immediate\write\AsyStream{%
+        viewportsize=(\ASYviewportwidth,\ASYviewportheight);}%
+    \fi
+  \fi
+  \immediate\closeout\AsyStream
+}
+\def\asy@input@graphic{%
+  \ifASYinline
+    \IfFileExists{"\AsyFile.tex"}{%
+      \catcode`:=12\relax
+      \@@input"\AsyFile.tex"\relax
+    }{%
+      \PackageWarning{asymptote}{file `\AsyFile.tex' not found}%
+    }%
+  \else
+    \IfFileExists{"\AsyFile.\AsyExtension"}{%
+      \ifASYattach
+        \ifASYPDF
+          \IfFileExists{"\AsyFile+0.pdf"}{%
+            \setbox\ASYbox=\hbox{\includegraphics[hiresbb]{"\AsyFile+0".pdf}}%
+          }{%
+            \setbox\ASYbox=\hbox{\includegraphics[hiresbb]{"\AsyFile".pdf}}%
+          }%
+        \else
+          \setbox\ASYbox=\hbox{\includegraphics[hiresbb]{"\AsyFile.eps"}}%
+        \fi
+        \textattachfile{\AsyFile.\AsyExtension}{\phantom{\copy\ASYbox}}%
+        \vskip-\ht\ASYbox
+        \indent
+        \box\ASYbox
+      \else
+        \ifASYPDF
+          \includegraphics[hiresbb]{"\AsyFile".pdf}%
+        \else
+          \includegraphics[hiresbb]{"\AsyFile.eps"}%
+        \fi
+      \fi
+    }{%
+      \IfFileExists{"\AsyFile.tex"}{%
+        \catcode`:=12
+        \@@input"\AsyFile.tex"\relax
+      }{%
+        \PackageWarning{asymptote}{%
+          file `\AsyFile.\AsyExtension' not found%
+        }%
+      }%
+    }%
+  \fi
+}
+\def\asydef{%
+  \let\ThisAsymptote\WriteGlobalAsyLine
+  \ProcessAsymptote{asydef}%
+}
+\newcommand\asyinclude[2][]{%
+  \begingroup
+  \stepcounter{asy}%
+  \setkeys{ASYkeys}{#1}%
+  \ifASYattach
+    \ASYinlinefalse
+  \fi
+  \ifx\asydir\empty\else
+    \def\ASYprefix{\asydir/}%
+  \fi
+  \immediate\write\AsyPreStream{%
+    \noexpand\InputIfFileExists{%
+      \ASYprefix\noexpand\jobname-\the\c@asy.pre}{}{}%
+  }%
+  \asy@write@graphic@header
+  \IfFileExists{#2.asy}{%
+    \CatchFileDef\@tempa{#2.asy}{%
+      \let\do\@makeother
+      \dospecials
+      \endlinechar=10\relax
+    }%
+  }{%
+    \IfFileExists{#2}{%
+      \CatchFileDef\@tempa{#2}{%
+        \let\do\@makeother
+        \dospecials
+        \endlinechar=10\relax
+      }%
+    }{%
+      \PackageWarning{asymptote}{file #2 not found}%
+    }%
+  }%
+  \immediate\write\AsyStream{\unexpanded\expandafter{\@tempa}}%
+  \asy@finalise@stream
+  \asy@input@graphic
+  \endgroup
+}
+\newcommand{\ASYanimategraphics}[5][]{%
+  \IfFileExists{_#3.pdf}{%
+    \animategraphics[{#1}]{#2}{_#3}{#4}{#5}%
+  }{}%
+}
+\newcommand\asysetup[1]{\setkeys{ASYkeys}{#1}}
+\define@key{ASYkeys}{dir}{%
+  \def\asydir{#1}%
+}
+\def\ASYwidth{}
+\define@key{ASYkeys}{width}{%
+  \edef\ASYwidth{\the\dimexpr#1\relax}%
+}
+\def\ASYheight{}
+\define@key{ASYkeys}{height}{%
+  \edef\ASYheight{\the\dimexpr#1\relax}%
+}
+\define@key{ASYkeys}{keepAspect}[true]{%
+  \ifthenelse{\equal{#1}{true}}
+    {\ASYkeepAspecttrue}
+    {\ASYkeepAspectfalse}%
+}
+\def\ASYviewportwidth{}
+\define@key{ASYkeys}{viewportwidth}{%
+  \edef\ASYviewportwidth{\the\dimexpr#1\relax}%
+}
+\def\ASYviewportheight{}
+\define@key{ASYkeys}{viewportheight}{%
+  \edef\ASYviewportheight{\the\dimexpr#1\relax}%
+}
+\define@key{ASYkeys}{inline}[true]{%
+  \ifthenelse{\equal{#1}{true}}
+    {\ASYinlinetrue}
+    {\ASYinlinefalse}%
+}
+\define@key{ASYkeys}{attach}[true]{%
+  \ifthenelse{\equal{#1}{true}}
+    {\ASYattachtrue}
+    {\ASYattachfalse}%
+}
diff --git a/Master/texmf-dist/tex/latex/asymptote/latexmkrc b/Master/texmf-dist/tex/latex/asymptote/latexmkrc
new file mode 100644
index 00000000000..1cca8732e94
--- /dev/null
+++ b/Master/texmf-dist/tex/latex/asymptote/latexmkrc
@@ -0,0 +1,4 @@
+sub asy {return system("asy '$_[0]'");}
+add_cus_dep("asy","eps",0,"asy");
+add_cus_dep("asy","pdf",0,"asy");
+add_cus_dep("asy","tex",0,"asy");
diff --git a/Master/texmf-dist/tex/latex/asymptote/ocg.sty b/Master/texmf-dist/tex/latex/asymptote/ocg.sty
new file mode 100644
index 00000000000..3ba555b58e8
--- /dev/null
+++ b/Master/texmf-dist/tex/latex/asymptote/ocg.sty
@@ -0,0 +1,127 @@
+%% Copyright (C) 2007 by Michael Ritzert <michael.ritz...@gmail.com>
+%% Spurious spaces removed by John Bowman [2009/06/01].
+
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{ocg}[2009/06/01]
+
+\RequirePackage{ifpdf}
+\ifpdf
+\else
+   \PackageWarningNoLine{ocg}{%
+      Loading aborted, because pdfTeX is not running in PDF mode%
+   }%
+   \expandafter\endinput
+\fi
+
+\DeclareOption*{}\ProcessOptions*\relax %allow anything as option for the moment
+
+%testing for correct pdfTeX version
+%TODO: find out minimum required version!
+\ifnum\pdftexversion<120
+   \PackageError{ocg}{%
+      pdfeTeX, version >= 1.20, required%
+   }{%
+      Install a newer version!%
+   }%
+\fi
+
+% Next OCG id -- TODO: autogenerate. but keep possibility to reopen an OCG.
+\newcount\@ocg@num\@ocg@num=0
+
+\gdef\@ocg@layersnames{}
+
+% called from the aux file
+\def\@ocg@makeknown#1#2#3{% #1: OCG name, #2: OC id, #3: on/off
+   \@ifundefined{OCG#2}{%
+      \message{OCG#2}
+      \expandafter\gdef\csname OCG#2\endcsname{#1}%
+      \immediate\pdfobj{<< /Type /OCG /Name (#1) >>}% new ocg
+      \xdef\@ocg@curocg{\the\pdflastobj\space 0 R}% reference to id
+      \xdef\@ocg@ocgs{\@ocg@ocgs\space\@ocg@curocg}% list of all OCGs in "first defined" order
+      \ifnum#3=1 %on
+         \xdef\@ocg@ocgson{\@ocg@ocgson\space\@ocg@curocg}% list of all default-on OCGs
+      \else%
+         \xdef\@ocg@ocgsoff{\@ocg@ocgsoff\space\@ocg@curocg}% list of all default-off OCGs
+      \fi%
+      \xdef\@ocg@layersnames{%
+         \@ocg@layersnames\space/OC#2\space\@ocg@curocg% name-to-id mapping
+      }%
+   }{%
+      \message{OCG#2 reopened}
+      % layer reopened
+   }
+}
+
+\AtBeginDocument{%
+   % the auxfile has been read if available. register the OCGs in the page resources.
+   \@ocg@addresource
+   \let\@ocg@makeknown\@gobble
+}
+
+% set page resources to include the layers defined in the aux file
+\def\@ocg@addresource{%
+   \immediate\pdfobj{<<\@ocg@layersnames\space>>}%
+   \xdef\@ocg@namesobj{\the\pdflastobj\space 0 R}%
+   % append to pageresources
+   \begingroup
+   \edef\x{\endgroup
+      \pdfpageresources{%
+         \the\pdfpageresources
+         /Properties \@ocg@namesobj%
+      }%
+   }%
+   \x
+}
+
+\newcount\@ocg@@ocgs
+\pdfobj reserveobjnum
+\@ocg@@ocgs=\pdflastobj
+
+\newcount\@ocg@@layersconfig
+\pdfobj reserveobjnum
+\@ocg@@layersconfig=\pdflastobj
+
+\pdfcatalog{%
+   /OCProperties <<
+      /OCGs \the\@ocg@@ocgs\space0 R\space
+      /D \the\@ocg@@layersconfig\space0 R\space
+   >>%
+}
+\def\@ocg@ocgs{}
+\def\@ocg@ocgson{}
+\def\@ocg@ocgsoff{}
+\AtEndDocument{%
+   \immediate\pdfobj useobjnum \@ocg@@ocgs {%
+      [\@ocg@ocgs\space]%
+   }%
+   \immediate\pdfobj useobjnum \@ocg@@layersconfig {%
+      <<
+         /Order [\@ocg@ocgs\space]
+         /ON    [\@ocg@ocgson\space]
+         /OFF   [\@ocg@ocgsoff\space]
+      >>%
+   }%
+}%
+
+% schedule a OCG for creation on the next pdflatex run (via the auxfile)
+\def\@ocg@newocg#1#2#3{% #1:name, #2:num, #3:on
+    \if@filesw%
+      \immediate\write\@auxout{%
+        \string\@ocg@makeknown{#1}{#2}{#3}%
+      }%
+    \fi%
+}
+
+% TODO: Are nested OCGs allowed?
+\newenvironment{ocg}[3]{%
+   \@ocg@newocg{#1}{#2}{#3}%
+   \gdef\@ocg@curnum{#2}%
+   \pdfliteral{/OC /OC\@ocg@curnum\space BDC}%
+   \message{/OC\@ocg@curnum}%
+   \ignorespaces
+}{%
+   \pdfliteral{EMC}%
+   %\unskip%
+   %\endgroup%
+   \ignorespacesafterend
+}