\ifPreview\else\expandafter\endinput\fi
\pr@loadcfg{prlyx}
\preview@delay{\typeout{Preview: Fontsize \f@size pt.}}
\ifx\PreviewBbAdjust\@undefined
\else
  \toks@{}
  \def\next{\toks@\expandafter{\the\expandafter\toks@\expandafter\space%
      \number\dimen@}\advance\count@\@ne\ifnum\count@<4
         \afterassignment\next\dimen@\fi}
  \count@=\z@ \afterassignment\next \dimen@\PreviewBbAdjust
  \typeout{Preview: Tightpage \expandafter\@gobble\the\toks@.}
\fi
\g@addto@macro\pr@ship@end{\typeout{Preview:
   Snippet \number\pr@snippet\space
   \number\ht\pr@box\space \number\dp\pr@box \space\number\wd\pr@box)}}

