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diff --git a/tex/context/base/mkxl/node-ext.mkxl b/tex/context/base/mkxl/node-ext.mkxl
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+++ b/tex/context/base/mkxl/node-ext.mkxl
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+%D \module
+%D   [       file=back-ext,
+%D        version=2019.02.08, % and later, merged file
+%D          title=\CONTEXT\ Backend Macros,
+%D       subtitle=Output,
+%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.
+
+\registerctxluafile{node-ext}{autosuffix}
+
+\unprotect
+
+% \let\normalopenout \openout
+% \let\normalwrite   \write
+% \let\normalcloseout\closeout
+% \let\normallatelua \latelua
+% \let\normalspecial \special
+
+% rotation
+
+% \permanent\protected\def\dostartrotation#1{\forcecolorhack\clf_startrotation#1\relax}
+% \permanent\protected\def\dostoprotation   {\clf_stoprotation\forcecolorhack}
+
+\permanent\protected\def\dostartrotation#1{\clf_startrotation#1\relax}
+\permanent\protected\def\dostoprotation   {\clf_stoprotation}
+
+% scaling
+
+% \permanent\protected\def\dostartscaling#1#2{\forcecolorhack\clf_startscaling rx #1 ry #2\relax}
+% \permanent\protected\def\dostopscaling     {\clf_stopscaling\forcecolorhack}
+
+\permanent\protected\def\dostartscaling#1#2{\clf_startscaling rx #1 ry #2\relax}
+\permanent\protected\def\dostopscaling     {\clf_stopscaling}
+
+% mirroring
+
+\permanent\protected\def\dostartmirroring{\clf_startmirroring}
+\permanent\protected\def\dostopmirroring {\clf_stopmirroring}
+
+% transform
+
+\permanent\protected\def\dotransformnextbox#1#2#3#4#5#6%
+  {\dowithnextbox{\dodotransformnextbox{#1}{#2}{#3}{#4}{#5}{#6}}}
+
+\permanent\protected\def\dodotransformnextbox#1#2#3#4#5#6%
+  {\hpack
+     {\kern #5\onebasepoint
+      \raise#6\onebasepoint
+      \hpack
+        {\clf_startmatrix rx #1 sx #2 sy #3 ry #4\relax
+         \box\nextbox
+         \clf_stopmatrix}}}
+
+%D \macros
+%D   {dostartclipping,dostopclipping}
+%D
+%D Clipping is implemented in such a way that an arbitrary code can be fed.
+%D
+%D \starttyping
+%D \dostartclipping {pathname} {width} {height}
+%D \dostopclipping
+%D \stoptyping
+
+\mutable\let\MPclippath\empty
+
+% \permanent\protected\def\dostartclipping#1#2#3% we can move this to lua and only set a box here
+%   {\forcecolorhack
+%    \meta_grab_clip_path{#1}{#2}{#3}%
+%    \clf_startclipping{\MPclippath}%
+%    \glet\MPclippath\empty}
+
+\permanent\protected\def\dostartclipping#1#2#3% we can move this to lua and only set a box here
+  {\meta_grab_clip_path{#1}{#2}{#3}%
+   \clf_startclipping{\MPclippath}%
+   \glet\MPclippath\empty}
+
+\permanent\protected\def\dostopclipping
+  {\clf_stopclipping}
+
+%D This wrapper is needed when you use code that messes with e.g. local color
+%D directives, invisible for the rest of the machinery. It's only needed in very
+%D special cases, like around the above scaler directives:
+
+\permanent\protected\edef\hcontainer{\hpack \s!direction\directionlefttoright \s!container\space}
+\permanent\protected\edef\vcontainer{\vpack \s!direction\directionlefttoright \s!container\space}
+\permanent\protected\edef\tcontainer{\tpack \s!direction\directionlefttoright \s!container\space}
+
+\protect \endinput