[experimental-ims] 47e277b Add emphasis to explain when bans are checked against

[Geoff Simmons]

commit 47e277b389d5c5be1b8f808d7582570a5366d473
Author: Per Buer <perbu at varnish-software.com>
Date:   Mon Aug 15 14:46:13 2011 +0200

    Add emphasis to explain when bans are checked against

diff --git a/doc/sphinx/tutorial/purging.rst b/doc/sphinx/tutorial/purging.rst
index bc40691..873a687 100644
--- a/doc/sphinx/tutorial/purging.rst
+++ b/doc/sphinx/tutorial/purging.rst
@@ -89,7 +89,7 @@ they could issue::
 Quite powerful, really.
 
 Bans are checked when we hit an object in the cache, but before we
-deliver it. An object is only checked against newer bans. If you have
+deliver it. *An object is only checked against newer bans*. If you have
 a lot of objects with long TTL in your cache you should be aware of a
 potential performance impact of having many bans.