diff --git a/lib/WebGUI/Group.pm b/lib/WebGUI/Group.pm
index 9910976bc..d108ed233 100644
--- a/lib/WebGUI/Group.pm
+++ b/lib/WebGUI/Group.pm
@@ -71,6 +71,35 @@ This package provides an object-oriented way of managing WebGUI groups and group
  $boolean = $group->userIsAdmin($userId,$groupId);
  $epoch = $group->userGroupExpireDate($userId,$date);
 
+=head1 MAGIC NUMBERS
+
+These magic group IDs are used throughout WebGUI:
+
+=over 4
+
+=item 1
+
+The visitors group. Only visitors are in this group, not registered users.
+
+=item 2
+
+The registered users group. Any user that is not a visitor is in this group.
+
+=item 3
+
+The admins group. This is the highest level of authority that can be given in
+the site.
+
+=item 7
+
+Everyone. All Visitors and Registered Users are in this group.
+
+=item 12
+
+Turn Admin On group. This group is allowed to use the Admin interface.
+
+=back
+
 =head1 METHODS
 
 These methods are available from this class:
diff --git a/lib/WebGUI/User.pm b/lib/WebGUI/User.pm
index cc42a66ac..c08385953 100644
--- a/lib/WebGUI/User.pm
+++ b/lib/WebGUI/User.pm
@@ -70,6 +70,22 @@ as getting/setting a users's profile data.
 
  WebGUI::User->validUserId($session, $userId);
 
+=head1 MAGIC NUMBERS
+
+These magic user IDs are used throughout WebGUI
+
+=over 4
+
+=item 1
+
+Visitor. Any user that is not logged-in is a Visitor.
+
+=item 3
+
+Admin. This is the main site admin account.
+
+=back
+
 =head1 METHODS
 
 These methods are available from this class: