+To account for this case when combining
+.B pick
+with regular shell tools, filter out the message number `0'.
+For example, do
+.PP
+.RS 5
+pick\0...\0|\0fgrep\0-vx\0\&0\0|\0wc\0-l
+.RE
+.PP
+to count the number of messages picked.
+.PP
+The pattern syntax `[l-r]' is not supported; each letter to be