- "Time zone used for calculating change log time stamps.
-It takes the same format as the TZ argument of `set-time-zone-rule'.
-If nil, use local time.
-If t, use universal time.")
+ "Time zone rule used for calculating change log time stamps.
+If nil, use local time. If t, use Universal Time.
+If a string, interpret as the ZONE argument of `format-time-string'.")