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