You can use this option to display a summary of all options possible with IRCONF.
irconf -h
You see the following output:
Usage : irconf -i[-v | -d | -p | -k] | -r -p | -s | -h
Options:
-i Registers a version
-r Unregisters a version
-s Displays all installed versions
-v <version> Overrides version number identified by the system
-d <CPC_driver> Default is 'libpcr'
-p <path> Installation path
-k <key> Installation name
-h Displays help