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At the top of my lecture notes I define the following environments:

%Student copy
\newenvironment{Notes}{\LARGE\color{white}}

%My copy (uncomment out "%" below)    
%\newenvironment{Notes}{\LARGE\color{red}}

Throughout my lecture notes I use the Notes environment to comment out bits of text, equations, lists, and parts of tables. Sometimes {\Notes ...} will encompass a line, other times half a page.

However, I know this really isn't the best way of doing things as {\LARGE ..} doesn't play nicely with equations. But I'm not really sure what to do instead. Any suggestions?

Edit

I only need the sections to appear white, i.e. when I print them off. Students fill in the gaps during lectures. I noticed that when I used my solution to blank off a couple of equations at a time, the colour setting goes odd. By odd I mean that sections are incorrectly coloured.

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1  
Do you mean "comment out" as in prevent LaTeX from typesetting it (as if there were a comment character before each line), or as in preventing your students from seeing it? If the latter, then the comment package is not going to do what you want [although I could be wrong; Martin's answer below seems to do that]. I suspect it's the former. What's wrong with what you're doing now? Are you saying that equations aren't set in the LARGE font? –  Matthew Leingang Oct 11 '10 at 11:20
    
The comment package is indeed not doing what you want since it won't leave gaps for the students to fill in stuff. –  Hendrik Vogt Oct 16 '10 at 7:10
    
@Hendrik-vogt: To leave gaps, all I do is change the text colour from red to white. I just need something simple. –  csgillespie Oct 18 '10 at 12:24

1 Answer 1

up vote 4 down vote accepted

You might consider using the comment package for including/excluding environments. If you just change the text color the text can still be copy/pasted which might not be what you want.

\documentclass{article}
\usepackage{comment}
\usepackage{color}

\specialcomment{Notes}{%
  \begingroup\LARGE\color{red}}{%
  \endgroup}
%\excludecomment{Notes}

\begin{document}

Lipsum\ldots

\begin{Notes}{Note}
This is a note 
\end{Notes}

\end{document}
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Can the 'comment' package increase text size within the the notes region? –  csgillespie Oct 10 '10 at 17:49
    
I edited the example to change both size and color of the comment. –  Martin Heller Oct 10 '10 at 20:06
    
Great. Many thanks. –  csgillespie Oct 12 '10 at 21:58

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