Hi, the Wiki on Math Macros has the following piece piece of information:
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Changing an existing command
Math-macros translate to \newcommand, i.e. they fail, if the macro name is
already defined.
To change an existing command (and its rendering in Lyx) you can use the
following trick: Assume you want to redefine \Re to print âReâ in roman font.
* define the macro: M-x math-macro Re
* fill it with \Re in the latex-cmd box and with \mathrm{Re} in the
lyx-render box
* put it in a Comment, so latex will not see it
* do the redefinition in ERT (of course not in a comment):
\renewcommand{\Re}{\mathrm{Re}}
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I do not understand how I can "put it in a Comment, so latex will not see it".
I know latex, and I know what a comment in latex is, but what do I do in
LyX to put in a comment. The user guide says there is a comment paragraph
environment, which I interpreted to mean that in the pull-down down
where Standard, Caption, Itemize, etc. are I would see a Comment section
but I can't seem to find it. I am using the revtex4 style.
Thanks