Added paragraph explaining that except clauses can't be empty; that
pass can be used if needed. By Dan Wolfe <wolfeman@apple.com>.
diff --git a/Doc/tut/tut.tex b/Doc/tut/tut.tex
index c373733..f52ec61 100644
--- a/Doc/tut/tut.tex
+++ b/Doc/tut/tut.tex
@@ -2751,6 +2751,10 @@
Use this with extreme caution, since it is easy to mask a real
programming error in this way!
+Each exception clause must have at least one line of executable code
+in the block. Comments are not executable code. If you want the
+exception clause to do nothing, use the \keyword{pass} statement.
+
The \keyword{try} \ldots\ \keyword{except} statement has an optional
\emph{else clause}, which must follow all except clauses. It is
useful to place code that must be executed if the try clause does not