eliminated old copy of proof.sty (1995), prefer the one usually included in current latex distributions (2005);
\usepackage{proof} only where required;
#!/bin/bash
set -e
FORMAT="$1"
VARIANT="$2"
"$ISABELLE_TOOL" logo Isar
cp "$ISABELLE_HOME/src/Doc/iman.sty" .
cp "$ISABELLE_HOME/src/Doc/extra.sty" .
cp "$ISABELLE_HOME/src/Doc/isar.sty" .
cp "$ISABELLE_HOME/src/Doc/ttbox.sty" .
cp "$ISABELLE_HOME/src/Doc/underscore.sty" .
cp "$ISABELLE_HOME/src/Doc/manual.bib" .
"$ISABELLE_HOME/src/Doc/prepare_document" "$FORMAT"