-Adding this parameter, casper will try to copy to ram the whole read-only media before mounting the root filesystem, it could need a lot of ram, according to the space used by the read-only media.
+Adding this parameter, casper will try to copy the whole read-only media to the computer's RAM before mounting the root filesystem. This could need a lot of ram, according to the space used by the read-only media.
+.TP
+.BI "{preseed/file|file}=" FILE
+A path to a file present on the rootfs could be used to preseed debconf database.
+.TP
+.BI "package/question=" VALUE
+All debian installed packages could be preseeded from command-line that way, beware of blanks spaces, they will interfere with parsing, use a preseed file in this case.