+For each user account on the server, the userids of people authorized
+to log into that account would be placed in the AUTH_USER_FILE for
+that user. However, in order for users to become authenticated, the
+server must determine that the user keys have "full" validity. This
+means that the server must fully trust at least one person whose
+signature on the connecting users key would validate the user. This
+would generally be the server admin. If the server admin's userid is
+
+"Alice <alice@foo.com>"
+
+then the server would run:
+
+# howler trust-uids "Alice <alice@foo.com>"
+
+To update the ms authorized_keys file for user "bob", the system would