[symfony#1966] Minor tweaks to impersonation note

weaverryan · weaverryan · commit 7306f1eb614c · 2012-11-25T20:27:26.000-05:00
diff --git a/book/security.rst b/book/security.rst
@@ -1644,9 +1644,9 @@ To switch back to the original user, use the special ``_exit`` username:
 
     http://example.com/somewhere?_switch_user=_exit
 
-During impersonation the user is provided with a special role called
-``ROLE_PREVIOUS_ADMIN``. In a template, for instance, this role can decide
-if a link to exit impersonation needs to be shown:
+During impersonation, the user is provided with a special role called
+``ROLE_PREVIOUS_ADMIN``. In a template, for instance, this role can be used
+to show a link to exit impersonation:
 
 .. configuration-block::
 
