diff -r 79858bd9f5ef -r d2c60ada3ece src/Doc/Logics/document/build
--- a/src/Doc/Logics/document/build	Fri Dec 07 17:00:40 2012 +0100
+++ b/src/Doc/Logics/document/build	Fri Dec 07 18:05:24 2012 +0100
@@ -10,7 +10,6 @@
 cp "$ISABELLE_HOME/src/Doc/iman.sty" .
 cp "$ISABELLE_HOME/src/Doc/extra.sty" .
 cp "$ISABELLE_HOME/src/Doc/ttbox.sty" .
-cp "$ISABELLE_HOME/src/Doc/proof.sty" .
 cp "$ISABELLE_HOME/src/Doc/manual.bib" .
 
 "$ISABELLE_HOME/src/Doc/prepare_document" "$FORMAT"