New command -msg_op

xorriso/opts_d_h.c

@@ -2076,6 +2076,9 @@ int Xorriso_option_help(struct XorrisO *xorriso, int flag)
 "              packet payload. Example of a info message with newline:",
 "                I:1: enter option text :",
 "              -pkt_output:on is intended for use by frontend programs.",
+"  -msg_op \"start_sieve\"|\"read_sieve\"|\"clear_sieve\"|\"end_sieve\"|\"parse\"",
+"              Enable, use, or disable message sieve. Or parse line into",
+"              words.",
 "  -logfile channel fileaddress  Copy output of a channel to the given file.",
 "              channel may be 'R','I','M' as with -pkt_output or '.'",
 "              for the consolidated -pkt_output stream.",