-Casper will look for persistent and snapshot partitions or files labeled "casper-rw", "home-rw", "casper-snap*", "home-snap*" and will try to, in order: mount as /cow the first, mount the second in /home, and just copy the contents of the latters in appropriate locations.
+Casper will look for persistent and snapshot partitions or files labeled "casper-rw", "home-rw", and files called "casper-sn*", "home-sn*" and will try to, in order: mount as /cow the first, mount the second in /home, and just copy the contents of the latters in appropriate locations (snapshots). Snapshots will be tried to be updated on reboot/shutdown. Look at casper-snapshot(1) for more informations.
+.TP
+.B "showmounts"
+Specifying this will make casper to show on "/" the ro filesystems (mostly compressed) on /casper. This is not enabled by default because could lead to problems by application like "mono" which store binary paths on installation.
+.TP
+.BI "todisk=" DEVICE
+Adding this parameter, casper will try to copy to the specified device the whole read-only media before mounting the root filesystem, it could need a lot of free space, according to one used by the read-only media. Subsequent boots should then skip this step and just specify the "live-media=DEVICE" boot parameter with the same DEVICE used this time.