diff -r 6641e941ef1e -r ff1a9aa48cfd app/django/db/models/sql/constants.py
--- a/app/django/db/models/sql/constants.py	Tue Oct 14 12:36:55 2008 +0000
+++ b/app/django/db/models/sql/constants.py	Tue Oct 14 16:00:59 2008 +0000
@@ -15,7 +15,8 @@
 LOOKUP_SEP = '__'
 
 # Constants to make looking up tuple values clearer.
-# Join lists
+# Join lists (indexes into the tuples that are values in the alias_map
+# dictionary in the Query class).
 TABLE_NAME = 0
 RHS_ALIAS = 1
 JOIN_TYPE = 2