Those parameters lets you override values read from the config file.
+ ignore_uuid
+
+Do not check that any UUID embedded in the initramfs matches the discovered
+medium. live-initramfs may be told to generate a UUID by setting
+LIVE_GENERATE_UUID=1 when building the initramfs.
+
integrity-check::
If specified, an MD5 sum is calculated on the live media during boot and
disables the "persistent" feature, useful if the bootloader (like syslinux) has
been installed with persistent enabled.
+ noprompt
+
+Do not prompt to eject the CD on reboot.
+
nosudo::
This parameter disables the automatic configuration of sudo.