rework vars

doc/sphinx/users-guide/vcl-variables.rst

@@ -8,16 +8,21 @@ object, stored in cache.
 
 In VCL you should know the following structures.
 
+.. XXX: Needs verification
+
 *req*
  The request object. When Varnish has received the request the req object is 
  created and populated. Most of the work you do in vcl_recv you 
  do on or with the req object.
 
+*bereq*
+ The backend request object. 
+
 *beresp*
  The backend respons object. It contains the headers of the object 
  comming from the backend. Most of the work you do in vcl_fetch you 
  do on the beresp object.
 
-*obj*
+*resp*
  The cached object. Mostly a read only object that resides in memory. 
- obj.ttl is writable, the rest is read only.
+ resp.ttl is writable, the rest is read only.