Creating environments with different colours and sizes

Question

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.

Answer 1

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}