+Use of this option is deprecated.
+.PP
+The
+.B \-a
+and
+.B \-m
+options are deprecated, though retained for compatibility reasons. It's
+recommended that you use the non-option specification instead.
+.PP
+The argument specifies an atom name and a message string to set. The
+default, if no atom or message is given, is to set
+.B XWAIT_PROPERTY
+to the value