[OS X TeX] Invisible text
Alain Schremmer
schremmer.alain at gmail.com
Sun May 27 19:53:27 CEST 2007
1) I often switch between two environments, for instance:
\newboolean{FormattedVersusEnumerated}
\newenvironment{Formatted}[2]%
{\textbf{#1}\par\textit{#2}}%
{\par}
\newenvironment{Enumerated}[2]
{\begin{enumerate}\item #1\item #2}%
{\end{enumerate}}
\newenvironment{Xxxx}
{%
\ifthenelse{\boolean{FormattedVersusEnumerated}}
{\begin{Formatted}}%
{\begin{Enumerated}}%
}%
{%
\ifthenelse{\boolean{FormattedVersusEnumerated}}%
{\end{Formatted}}%
{\end{Enumerated}}%
}%
and then in the document
\setboolean{FormattedVersusEnumerated}{true}
\begin{Xxxx}
{First test phrase}
{Second test phrase}
\end{Xxxx}
Where I ran into trouble of course is when, instead of "Formatted", I
needed an environment that would do nothing. I then tried
\newenvironment{Invisible}[2]%
{\invisible{#1}}%
{\\invisible{#2}}
but even though Lamport mentions \invisible on page 161 of the
Addendum to the Second Preliminary Ed. (July 13, 1998), Companion 2ed
does not mention it and all I found via Google was, at http://
theory.stanford.edu/people/arjun/ak-grad.html, the following "LaTeX
trick" which I didn;t understand and didn't work for me:
\mbox{} - used to create invisible text
2) The only way I have found is, instead of the above, do the
ifthenelse in the document with \newenvironment{Naught}{ }{ } but,
while it works, as I have a lot of nested ifthenelse, that turns into
a nightmare.
Very hopeful regards
--schremmer
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