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+%D \module
+%D   [       file=page-one,
+%D        version=2000.10.20,
+%D          title=\CONTEXT\ Page Macros,
+%D       subtitle=Default Routine,
+%D         author=Hans Hagen,
+%D           date=\currentdate,
+%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
+%C
+%C This module is part of the \CONTEXT\ macro||package and is
+%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
+%C details.
+
+\writestatus{loading}{ConTeXt Page Macros / Default Routine}
+
+%D This is just the good old \CONTEXT\ output routine, which
+%D has been there right from the start.
+
+\unprotect
+
+% OTRONE: basic single column
+
+\activateotr{ONE}{} % the default one
+
+\newtoks\OTRONEoutput
+
+\def\OTRONEgotonextpage
+  {\ejectpage}
+
+\def\OTRONEgotonextpageX % will become obsolete
+  {\superejectpage}
+
+\def\OTRONEsethsize
+  {\global\hsize\textwidth}
+
+% keep (original one)
+%
+% \def\OTRONEsetvsize
+%    {\ifdim\vsize=\teksthoogte \else
+%       \bgroup
+%       \scratchdimen-\vsize
+%       \advance\scratchdimen \teksthoogte
+%       \global\advance\vsize \scratchdimen
+%       \relax \ifdim\pagegoal<\maxdimen
+%         \advance\scratchdimen \pagegoal
+%         \global\pagegoal\scratchdimen
+%       \fi
+%       \egroup
+%    \fi}
+%
+% no (keep)
+%
+% \def\OTRONEsetvsize
+%   {\ifdim\vsize=\teksthoogte \else
+%      \bgroup
+%      \scratchdimen-\vsize
+%      \advance\scratchdimen \teksthoogte
+%      \ifgridsnapping
+%        \getrawnoflines\scratchdimen
+%        \scratchdimen\noflines\openlineheight
+%        \ifdim\scratchdimen>\noflinesheight % available afterwards
+%          \advance\scratchdimen-\openlineheight
+%        \fi
+%        \ifdim\scratchdimen<\zeropoint
+%          \scratchdimen\zeropoint
+%        \fi
+%      \fi
+%      \global\advance\vsize \scratchdimen
+%      \relax \ifdim\pagegoal<\maxdimen
+%        \advance\scratchdimen \pagegoal
+%        \global\pagegoal\scratchdimen
+%      \fi
+%      \egroup
+%   \fi}
+
+% \def\OTRONEsetvsize
+%   {\ifgridsnapping
+%      \ifcase\layoutlines
+%        \getrawnoflines\teksthoogte
+%      \else
+%        \noflines\layoutlines
+%      \fi
+%      \global\vsize\noflines\openlineheight
+%    \else
+%      \global\vsize\teksthoogte
+%    \fi
+%    \ifdim\pagegoal<\maxdimen
+%      \global\pagegoal\vsize
+%    \fi}
+
+\newdimen\oldvsize
+
+\def\OTRONEsetvsize
+  {\ifgridsnapping
+     \ifcase\layoutlines
+       \getrawnoflines\textheight
+     \else
+       \noflines\layoutlines
+     \fi
+     \global\vsize\noflines\openlineheight
+   \else
+     \global\vsize\textheight
+   \fi
+   \ifdim\pagegoal<\maxdimen
+     \ifdim\oldvsize=\vsize
+       % let's assume that the layout didn't change
+     \else
+       \bgroup
+         \global\oldvsize\vsize
+         \advance\vsize-\topinserted
+         \advance\vsize-\botinserted
+         \global\pagegoal\vsize
+       \egroup
+     \fi
+   \fi}
+
+\chardef\kindofpagetextareas=2 % whole page (public variable! never change)
+
+\def\OTRONEregisteredtextarea#1%
+  {\ifregistertextareas
+     \setbox0\vbox{#1}%
+     \wd0\makeupwidth % somehow a space creeps in
+     \vbox{\registeredtextarea000}%
+   \else
+     #1%
+   \fi}
+
+% \chardef\kindofpagetextareas\plusone
+
+\def\doOTRONEregisteredtextareaA#1%
+  {\ifregistertextareas
+     \xypos{pbd:\realfolio:b}% we could save bytes by only saving the y
+     \endgraf
+     \begingroup
+     \scratchdimen\MPy{pbd:\realfolio:b}%
+     \advance\scratchdimen-\MPy{pbd:\realfolio:e}%
+     \setbox\scratchbox\null
+     \wd\scratchbox\makeupwidth
+     \ht\scratchbox\scratchdimen
+     \vsmash{\registeredtextarea00\scratchbox}%
+     \endgroup
+     #1%
+     \endgraf
+     \xypos{pbd:\realfolio:e}%
+   \else
+     #1%
+   \fi}
+
+\def\doOTRONEregisteredtextareaB#1%
+  {\ifregistertextareas
+     \setbox0\vbox{#1}%
+     \wd0\makeupwidth % somehow a space creeps in
+     \vbox{\registeredtextarea000}%
+   \else
+     #1%
+   \fi}
+
+\let\OTRONEregisteredtextareaA\firstofoneargument
+\let\OTRONEregisteredtextareaB\firstofoneargument
+
+\def\OTRONEdopagecontents#1#2% \box<n> \unvbox<n>
+  {\bgroup             % niet breedte zetten, kan fractie zijn!
+   \ifcase\kindofpagetextareas
+   \or % partial page (experimental)
+     \let\OTRONEregisteredtextareaA\doOTRONEregisteredtextareaA
+   \or % whole page   (default)
+     \let\OTRONEregisteredtextareaB\doOTRONEregisteredtextareaB
+   \or % partial page (only works well with no stretch!)
+     \let\OTRONEregisteredtextareaA\doOTRONEregisteredtextareaB
+   \fi
+   \setbox0\vbox \ifbottomnotes to \textheight \fi
+     {\edef\currentpagedepth{\the\dp#2}% still to be derived from #1
+      \dotopinsertions
+      \ifgridsnapping
+        \OTRONEregisteredtextareaA{#1#2}%
+        \vskip-\currentpagedepth\vskip\openstrutdepth
+        \pushproperties % moved from just after #1#2
+        \prevdepth\openstrutdepth
+        \dobotinsertions
+        \vfil
+      \else\ifr@ggedbottom
+        \OTRONEregisteredtextareaA{#1#2}%
+        \vskip-\currentpagedepth\vskip\openstrutdepth
+        \pushproperties % moved from just after #1#2
+        \prevdepth\openstrutdepth
+        \dobotinsertions
+        \vfil
+      \else\ifb@selinebottom
+        \OTRONEregisteredtextareaA{#1#2}%
+        \kern-\currentpagedepth\kern\maxdepth
+        \pushproperties % moved from just after #1#2
+        \dobotinsertions
+      \else
+        \OTRONEregisteredtextareaA{#1#2}%
+        \pushproperties % moved from just after #1#2
+        \dobotinsertions % added
+      \fi\fi\fi
+      \fakepagenotes}% was \fakenotes, but wrong! (check with \setupalign[height])
+   \ifbottomnotes
+     \ifgridsnapping
+\ifcase\layoutlines % todo: make macro of this
+    \getrawnoflines\textheight
+\else
+    \noflines\layoutlines
+\fi
+%        \getnoflines\textheight
+       \advance\noflines \minusone
+       \scratchdimen\noflines\lineheight
+       \advance\scratchdimen \topskip
+     \else
+       \scratchdimen\ht0
+     \fi
+   \else
+     \scratchdimen\zeropoint
+   \fi
+   \setbox2\hbox
+     {\checksinglecolumnfootnotes
+      \lower\scratchdimen\vbox{\placebottomnotes}}%
+   \smashbox2% % needed here
+   \ifbottomnotes
+     \ht0\zeropoint
+   \fi
+   \OTRONEregisteredtextareaB
+     {\vbox to \textheight
+        {\box0\box2\ifbottomnotes\else\vfill\fi}}%
+   \egroup}
+
+\def\OTRONEfinalsidefloatoutput
+  {\finaloutput\unvbox\normalpagebox}
+
+\OTRONEoutput
+  {\sidefloatoutput}
+
+%D Insertions
+
+\newif\iftopofinsert
+
+% \def\OTRONEdosettopinserts
+%   {\bgroup
+%    \ifsomefloatwaiting
+%      \noffloatinserts\zerocount
+%      \let\totaltopinserted\!!zeropoint
+%      \OTRONEdodosettopinserts
+%      \ifnum\@@bknbottom=\zerocount
+%        \ifnum\@@bknlines>\zerocount
+%          \ifdim\totaltopinserted>\zeropoint\relax
+%            \dimen0=\lineheight
+%            \dimen0=\@@bknlines\dimen0
+%            \advance\dimen0 \totaltopinserted\relax
+%            \ifdim\dimen0>\textheight
+%              \showmessage\m!floatblocks8\@@bknlines
+%              \vfilll\eject
+%            \fi
+%          \fi
+%        \fi
+%      \fi
+%    \fi
+%    \egroup}
+
+\def\OTRONEdosettopinserts
+  {\bgroup
+   \ifsomefloatwaiting
+     \noffloatinserts\zerocount
+     \let\totaltopinserted\!!zeropoint
+     \OTRONEdodosettopinserts
+     \ifnum\@@bknbottom=\zerocount
+       \ifnum\@@bknlines>\zerocount
+         \ifdim\totaltopinserted>\zeropoint\relax
+           \ifdim\dimexpr\@@bknlines\lineheight+\totaltopinserted\relax>\textheight
+             \showmessage\m!floatblocks8\@@bknlines
+             \vfilll\eject
+           \fi
+         \fi
+       \fi
+     \fi
+   \fi
+   \egroup}
+
+\def\OTRONEdodosettopinserts
+  {\ifnum\noffloatinserts<\noftopfloats
+     \dogetfloat
+     \ifdim\topinserted=\zeropoint
+       \topofinserttrue
+     \else
+       \topofinsertfalse
+     \fi
+     \global\advance\topinserted\dimexpr\ht\floatbox+\dp\floatbox+\floatbottomskip\relax
+     \ifdim\topinserted<\textheight\relax
+       \xdef\totaltopinserted{\the\topinserted}%
+       \insert\topins
+         {\forgetall
+          \iftopofinsert
+            \topskipcorrection % [xx] new: see icare topbleed
+            \kern-\lineskip\par
+            \prevdepth\maxdimen
+          \else
+            %\blank[-\@@bkspaceafter,\@@bkspacebefore]% inserts can't look back
+            \betweenfloatblanko
+          \fi
+          \flushfloatbox
+          \blank[\@@bkspaceafter]}%
+       \ifsomefloatwaiting
+         \advance\noffloatinserts \plusone
+       \else
+         \noffloatinserts\noftopfloats\relax
+       \fi
+       \dofloatflushedinfo
+     \else
+       \doresavefloat
+       \noffloatinserts\noftopfloats\relax
+     \fi
+   \else
+     \ifsomefloatwaiting
+       \showmessage\m!floatblocks6{\the\noftopfloats}%
+     \fi
+     \let\OTRONEdodosettopinserts\relax
+   \fi
+   \OTRONEdodosettopinserts}
+
+\def\OTRONEdosetbotinserts
+  {\bgroup
+   \ifsomefloatwaiting
+     \noffloatinserts\zerocount
+     \OTRONEdodosetbotinserts
+   \fi
+   \egroup}
+
+\def\OTRONEdodosetbotinserts
+  {\ifnum\noffloatinserts<\nofbotfloats\relax
+     \dogetfloat
+     \global\advance\botinserted \ht\floatbox\relax
+     \global\advance\botinserted \dp\floatbox\relax
+     \global\advance\botinserted \floattopskip\relax
+     \ifdim\botinserted<\pagegoal\relax
+       \insert\botins
+         {\forgetall
+          \blank[\@@bkspacebefore]%
+          \flushfloatbox}%
+       \ifsomefloatwaiting
+         \advance\noffloatinserts \plusone
+       \else
+         \noffloatinserts\nofbotfloats
+       \fi
+       \dofloatflushedinfo
+     \else
+       \doresavefloat
+       \noffloatinserts\nofbotfloats\relax
+     \fi
+     \global\nofloatpermittedtrue % vgl topfloats s!
+   \else
+     \ifsomefloatwaiting
+       \showmessage\m!floatblocks7{\the\nofbotfloats}%
+     \fi
+     \let\OTRONEdodosetbotinserts\relax
+   \fi
+   \OTRONEdodosetbotinserts}
+
+\def\OTRONEdosetbothinserts
+  {\global\topinserted\zeropoint
+   \global\botinserted\zeropoint
+   \ifflushingfloats \else
+     \OTRONEdosettopinserts
+     \OTRONEdosetbotinserts
+     \ifsomefloatwaiting
+        \doif\@@bkcache\v!no\doflushfloats
+     \fi
+   \fi}
+
+% \def\OTRONEdotopinsertions
+%   {\ifvoid\topins\else
+%      \ifgridsnapping
+%        \box\topins
+%        \vskip-\topskip \vskip\strutheight % [xx] new: see icare topbleed
+%      \else
+%        \unvbox\topins
+%      \fi
+%    \fi
+%    \global\topinserted\zeropoint}
+
+\chardef\topinserttopskipmode=0 % 1 no topskip
+
+\def\OTRONEdotopinsertions
+  {\ifvoid\topins\else
+     \ifgridsnapping
+       \box\topins
+       \vskip-\topskip
+       \vskip\strutheight % [xx] new: see icare topbleed
+     \else
+       \ifcase\topinserttopskipmode
+         % 0: default, do nothing
+       \or
+         % 1: no topskip (crossed fingers)
+         \vskip-\topskip
+         \vskip\strutheight
+       \fi
+       \unvbox\topins
+     \fi
+   \fi
+   \global\topinserted\zeropoint}
+
+\def\OTRONEdobotinsertions
+  {\ifvoid\botins\else
+     \ifgridsnapping
+       \snaptogrid\hbox{\box\botins}%
+     \else
+       \unvbox\botins
+     \fi
+   \fi
+   \global\botinserted\zeropoint
+   \global\nofloatpermittedfalse}
+
+\def\OTRONEdoflushfloats
+  {\global\flushingfloatstrue
+   \ifsomefloatwaiting
+     \par
+     % if kept, then option and definitely off in gridmode ! ! ! !
+     % \ifvmode \prevdepth\maxdimen \fi % prevents whitespace; problematic in icare tests
+     \OTRONEdodoflushfloats
+   \fi
+   \global\savednoffloats\zerocount
+   \global\somefloatwaitingfalse
+   \global\flushingfloatsfalse}
+
+\def\OTRONEflushfloatbox % nog verder doorvoeren en meer info in marge
+  {\ifcenterfloatbox \ifdim\wd\floatbox<\hsize
+     \setbox\floatbox\hbox to \hsize{\hss\box\floatbox\hss}%
+   \fi \fi
+   \snaptogrid\hbox{\iftestfloatbox\ruledhbox\fi{\copy\floatbox}}}
+
+\def\OTRONEdodoflushfloats % much in common with OTRSET
+  {\ifsomefloatwaiting
+     \ifpackflushedfloats
+       \centerfloatboxfalse
+       \dogetfloat
+       \ifdim\wd\floatbox>\makeupwidth
+         \global\setbox\floatbox\hbox to \makeupwidth{\hss\box\floatbox\hss}%
+       \fi
+       \OTRONEsetvsize
+       \!!widtha\wd\floatbox
+       \dofloatflushedinfo
+       \doloop
+         {\ifsomefloatwaiting
+            \dosavefloatstatus
+            \dogetfloat
+            \advance\!!widtha 1em % variable
+            \advance\!!widtha \wd\floatbox\relax
+            \ifdim\!!widtha>\hsize
+              \dorestorefloatstatus
+              \global\somefloatwaitingtrue
+              \exitloop
+            \else
+              \global\setbox\floatbox\hbox
+                {\ifcase\columndirection % nog document wide
+                   \ifvoid\savedfloatbox\else
+                     \ifhbox\savedfloatbox\unhbox\else\box\fi\savedfloatbox\hfil
+                   \fi
+                   \ifhbox\floatbox\unhbox\else\box\fi\floatbox
+                 \else
+                   \ifhbox\floatbox\unhbox\else\box\fi\floatbox
+                   \ifvoid\savedfloatbox\else
+                     \hfil\ifhbox\savedfloatbox\unhbox\else\box\fi\savedfloatbox
+                   \fi
+                 \fi}%
+              \dofloatflushedinfo
+            \fi
+          \else
+            \exitloop
+          \fi}%
+       \global\setbox\floatbox\hbox to \hsize
+         {\hfil\ifhbox\floatbox\unhbox\else\box\fi\floatbox\hfil}%
+     \else
+      %\bgroup % \box\floatbox can be in use!? messy
+       \dogetfloat
+      %\doplacefloatbox
+      %\egroup
+       \dofloatflushedinfo
+     \fi
+     % there is a chance that due to rounding errors, the float
+     % fits on a page where it was first rejected, in which case
+     % the prevdepth is -maxdimen and we cannot obey the grid
+     \doplacefloatbox
+     \expandafter\OTRONEdodoflushfloats
+   \fi}
+
+\def\OTRONEdocheckiffloatfits % vervangen ivm downward comp
+  {\ifnofloatpermitted
+     \global\roomforfloatfalse
+   \else
+     % new per 31/5/2004, should be an option, only one column mode
+     \begingroup
+     \scratchdimen\dimexpr\pagetotal+\lineheight\relax
+     \ifdim\scratchdimen>\pagegoal
+       \goodbreak % hack ? needed in icare-az
+     \fi
+     % should be an option
+     \endgroup
+     \dimen0\dimexpr\pagetotal+\ht\floatbox+\dp\floatbox+\floattopskip-\pageshrink\relax
+    %\message{c:\the\mofcolumns,t:\the\pagetotal,g:\the\pagegoal}%\wait
+     \dimen2\pagegoal
+     \relax % needed
+     \ifcase\textfloatmethod
+       % method 0 : raw
+     \or
+       % method 1 : safe
+       \dimen2 .99\pagegoal
+     \or
+       % method 2 : tight
+       \advance\dimen0 -\onepoint
+     \fi
+     \relax % really needed ! ! ! !
+     \ifdim\dimen0>\dimen2
+       \global\roomforfloatfalse
+     \else
+       \global\roomforfloattrue
+     \fi
+   \fi}
+
+\def\OTRONEflushsavedfloats
+  {\dosetbothinserts}
+
+% TODO: TEST FIRST, NO CORRECTION NEEDED IN GRID MODE, EVT OPTION
+
+\def\OTRONEsomeherefloat[#1]% spacing between two successive must be better
+  {\baselinecorrection                           % not really needed in grid mode:
+  %\ifgridsnapping \else \baselinecorrection \fi % ! ! ! test test test ! ! ! !
+   \doplacefloatbox
+   \doinsertfloatinfo
+   \dochecknextindentation\??bk
+   \dorechecknextindentation}
+
+% \def\OTRONEsomefixdfloat % [#1]
+%   {\docheckiffloatfits
+%    \ifroomforfloat\else
+%      \goodbreak
+%    \fi
+%    \showmessage\m!floatblocks9\empty
+%    \someherefloat} % [#1]
+%
+% better:
+%
+% \dorecurse{50}
+%   {[before normal] \input thuan
+%    \placefigure{normal}{\framed[height=1cm,width=8cm]{}}
+%    \placefigure{normal}{\framed[height=2cm,width=8cm]{}}
+%    [before force] \input thuan
+%    \placefigure[force]{force}{\framed[height=8cm,width=8cm]{}}}
+
+\chardef\fixedfloatmethod=3
+
+% \def\OTRONEsomefixdfloat % [#1]
+%   {\docheckiffloatfits
+%    \ifroomforfloat\else
+%      \ifzeropt\pagetotal
+%        % let's assume that there is room
+%      \else
+%        \ifcase\fixedfloatmethod
+%          % disabled
+%        \or % 1 (old method)
+%          \goodbreak
+%        \or % 2 (safe method)
+%          \page
+%        \or % 3 (keeps in stream)
+%          \vskip\textheight
+%          \vskip-\textheight
+%        \or % 4 (also keeps in place)
+%           \dosomebreak\nobreak
+%        \fi
+%      \fi
+%    \fi
+%    \showmessage\m!floatblocks9\empty
+%    \someherefloat} % [#1]
+
+\def\OTRONEsomefixdfloat % [#1]
+  {% there is (in mkii) no good way to prevent a break
+   % so better fail than mess, we can get loose from
+   % heads, so be it
+   \showmessage\m!floatblocks9\empty
+   \OTRONEsomeherefloat} % [#1]
+
+\def\OTRONEsomesidefloat[#1]%  links, rechts     NOG TESTEN EN AANPASSEN
+  {\ifinsidecolumns
+     \someelsefloat[\v!here]%
+   \else
+    %\checkwaitingfloats{#1}%
+     \def\logsidefloat
+       {\doinsertfloatinfo}%
+     \setbox\floatbox\vbox{\box\floatbox}%
+     \wd\floatbox\floatwidth
+     \processfirstactioninset
+       [#1]
+       [     \v!left=>\leftfloat       {\box\floatbox},
+            \v!right=>\rightfloat      {\box\floatbox},
+           \v!inleft=>\leftmarginfloat {\box\floatbox},
+          \v!inright=>\rightmarginfloat{\box\floatbox},
+       \v!leftmargin=>\leftmarginfloat {\box\floatbox},
+      \v!rightmargin=>\rightmarginfloat{\box\floatbox},
+         \v!leftedge=>\leftedgefloat   {\box\floatbox},
+        \v!rightedge=>\rightedgefloat  {\box\floatbox},
+        \v!backspace=>\backspacefloat  {\box\floatbox},
+         \v!cutspace=>\cutspacefloat   {\box\floatbox},
+         \v!inmargin=>\cutspacefloat   {\box\floatbox}]%
+     \doifinset\v!tall{#1}\flushsidefloatsafterpar
+   \fi}
+
+\def\OTRONEdosomepagefloat#1[#2]%
+  {%\checkwaitingfloats{#1}%
+   \global\setbox#1\vbox
+     {\unvbox#1%
+      \vbox to \textheight
+        {\doifnotinset\v!high{#2}\vfill
+         \box\floatbox
+         \doifnotinset\v!low{#2}\vfill}%
+      \goodbreak}%
+   \doinsertfloatinfo}
+
+\def\OTRONEsomepagefloat     {\OTRONEdosomepagefloat\collectedpagefloats}
+\def\OTRONEsomeleftpagefloat {\OTRONEdosomepagefloat\collectedleftpagefloats}
+\def\OTRONEsomerightpagefloat{\OTRONEdosomepagefloat\collectedrightpagefloats}
+
+\def\OTRONEsometopsfloat[#1]%
+  {\ifdim\topinserted=\zeropoint
+     \topofinserttrue
+   \else
+     \topofinsertfalse
+   \fi
+   \global\advance\topinserted \ht\floatbox
+   \global\advance\topinserted \dp\floatbox
+   \global\advance\topinserted \floatbottomskip
+   \insert\topins
+     {\forgetall
+      \iftopofinsert
+        \topskipcorrection % [xx] new: see icare topbleed
+        \kern-\lineskip\par\prevdepth\maxdimen
+      \else
+        %\blank[-\@@bkspaceafter,\@@bkspacebefore]% inserts can't look back
+        \betweenfloatblanko
+      \fi
+      \flushfloatbox
+      \blank[\@@bkspaceafter]}%
+   \doinsertfloatinfo}
+
+\def\OTRONEsomebotsfloat[#1]%
+  {\global\advance\botinserted \ht\floatbox
+   \global\advance\botinserted \dp\floatbox
+   \global\advance\botinserted \floattopskip
+   \insert\botins
+     {\forgetall
+      \blank[\@@bkspacebefore]%
+      \flushfloatbox}%
+   %\global\nofloatpermittedtrue
+   \doinsertfloatinfo}
+
+\def\OTRONEsomefacefloat[#1]% untested
+  {\startopposite\flushfloatbox\stopopposite}
+
+\def\OTRONEnextcolumn[#1]%
+  {}
+
+\protect \endinput