-Specify root device for usage in grub (corresponds with $TARGET).
-Again, use grub syntax for specifying.
-Corresponding with configuration variable GROOT.
+*--help*, *-h*::
+ Show summary of options and exit.
+
+*--hostname* <_hostname_>::
+ Use specified hostname instead of the default (being 'grml').
+
+*-i*, *--iso* <_/mntpoint_>::
+ Specify mountpoint where you have a Debian ISO mounted loopback.
+ Using this option instead of the mirror option gives you the possibility
+ to install the base-system without network access. Make sure you
+ mounted the according Debian-ISO to the given <_/mntpoint_>. See section
+ 'Usage examples' for a demonstration.