Index: gpg.texi
===================================================================
--- gpg.texi
+++ gpg.texi
@@ -790,7 +790,8 @@
 
 @c man:.RS
 The listing shows you the key with its secondary keys and all user
-ids. Selected keys or user ids are indicated by an asterisk. The trust
+ids. The primary user id is indicated by a dot, and selected keys or
+user ids are indicated by an asterisk. The trust
 value is displayed with the primary key: the first is the assigned owner
 trust and the second is the calculated trust value. Letters are used for
 the values: