Enrico Forestieri wrote: > Both forms are equivalent, indeed \bgroup and \egroup are defined > as \let\bgroup={ \let\egroup=} by TeX. The macro forms are useful > because you can include them in a definition without worrying > about how they nest. I mean that you can do something like: > > \def\beginlarge{\bgroup\large} > \def\endlarge{\egroup} > > after which you can use > > xxx \beginlarge yyy \endlarge zzz
these ones are also possible xxx \beginlarge yyy } zzz xxx \beginlarge yyy \egroup zzzz but _not_ xxx \beginlarge yyy \endgroup zzz in some cases it is sav to define \def\beginlarge{\begingroup\large} which needs an \endgroup. Herbert