On Thu, Jun 19, 2003 at 02:13:15PM +0200, Pep Roca wrote:
> I'm tried to use the tip from Juergen Spitzmueller (Re: toggled printing for
> instructor version, 12 Jun 2003) with any success. I don't get any error, but
> I can't get invisible text. I attach a example file with the Juergen
> Spitzmueller's preamble is someone wants to have a look at it.
>
> \newboolean{HIDE}
> \newcommand\invisible
> {\ifthenelse{\boolean{HIDE}}{\color{white}}{}}
> \newcommand\visible
> {\ifthenelse{\boolean{HIDE}}{\color{black}}{}}
Note that when changing the color to white, the text is still available in
the dvi/postscript file, so this method should not be used if you hand out
the dvi/postscript file.
