[symfony#2783] Putting back my a/b labels - I think this helps you tr…

…ack the sections and this area - since it deals with security - is very very important

book/security.rst

@@ -762,13 +762,13 @@ is used to enforce access.
 Each ``access_control`` has several options that configure two different
 things:
 
-* :ref:`should the incoming request match this access control entry<security-book-access-control-matching-options>`
-* :ref:`once it matches, should some sort of access restriction be enforced<security-book-access-control-enforcement-options>`:
+* (a) :ref:`should the incoming request match this access control entry<security-book-access-control-matching-options>`
+* (b) :ref:`once it matches, should some sort of access restriction be enforced<security-book-access-control-enforcement-options>`:
 
 .. _security-book-access-control-matching-options:
 
-Matching Options
-................
+(a) Matching Options
+....................
 
 Symfony2 creates an instance of :class:`Symfony\\Component\\HttpFoundation\\RequestMatcher`
 for each ``access_control`` entry, which determines whether or not a given
@@ -863,8 +863,8 @@ will match any ``ip``, ``host`` or ``method``:
 
 .. _security-book-access-control-enforcement-options:
 
-Access Enforcement
-..................
+(b) Access Enforcement
+......................
 
 Once Symfony2 has decided which ``access_control`` entry matches (if any),
 it then *enforces* access restrictions based on the ``roles`` and ``requires_channel``