-Message numbers greater than the highest existing message in a folder
-as part of a range designation are replaced with the next free message
-number.
+A message number less than that of the smallest existing message in a
+folder is treated as if the message already exists. A message number
+greater than that of the highest existing message in a folder causes
+an \*(lqout of range\*(rq error message to be displayed.
+.PP
+As part of a range designation that contains messages that do exist,
+message numbers less than the smallest, or greater than the highest,
+existing message in a folder are ignored.