Nevermind, \parskip is a rubber length, so the effect isn't uniform. > What do you think about the following (requires the verbatim package): > > \newcommand{\zzTop}{\vspace{-2\parskip}} > \newcommand{\zzBot}{\vspace{-1\parskip}} > \newenvironment{tightverbatim} > {\zzTop\verbatim} > {\endverbatim\zzBot} > > I'm also thinking about putting a -1\parskip between theorems and proofs. > >