All, I have a file in my document directory called math-ext.tex. Isn't this part of the core now? Can I get rid of it? It starts out like this: %D \module %D [ file=math-ext, %D version=2006.01.14, %D title=\CONTEXT\ Math Macros, %D subtitle=Extra Macros, %D author={Hans Hagen \& Taco Hoekwater}, %D date=\currentdate, %D copyright=\PRAGMA] %C %C This module is part of the \CONTEXT\ macro||package and is %C therefore copyrighted by \PRAGMA. See mreadme.pdf for %C details. %M \ifx\startalign\undefined \input math-ext.tex \fi % some simple math constructs (based on user requests) % % preliminary \unprotect % adapted stuff % we need to make this plain code a bit more 'readable' \def\openup {\afterassignment\dopenup\scratchdimen=} \def\dopenup {\advance\lineskip \scratchdimen \advance\baselineskip \scratchdimen \advance\lineskiplimit\scratchdimen} \def\jot{.25\bodyfontsize} % plain tex: 3 pt (todo: better name) \newif\ifdt@p \def\displ@y % \presetdisplayspacing or so {\global\dt@ptrue \openup\jot \mathsurround\zeropoint \everycr{\noalign{% \ifdt@p \global\dt@pfalse \ifdim\prevdepth>-\thousandpoint \vskip-\lineskiplimit \vskip\normallineskiplimit \fi \else