Something

DEFAULT /install/vmlinuz
APPEND  file=/cdrom/preseed/xubuntu.seed initrd=/install/initrd.gz quiet --
LABEL install
  menu label ^Install in text mode
  kernel /install/vmlinuz
  append  file=/cdrom/preseed/xubuntu.seed initrd=/install/initrd.gz quiet --
LABEL linux
  menu hide
  kernel /install/vmlinuz
  append  file=/cdrom/preseed/xubuntu.seed initrd=/install/initrd.gz quiet --
LABEL cdrom
  menu hide
  kernel /install/vmlinuz
  append  file=/cdrom/preseed/xubuntu.seed initrd=/install/initrd.gz quiet --
LABEL expert
  menu hide
  kernel /install/vmlinuz
  append  file=/cdrom/preseed/xubuntu.seed priority=low initrd=/install/initrd.gz --
LABEL oem
  menu label ^OEM install (for manufacturers)
  kernel /install/vmlinuz
  append  file=/cdrom/preseed/xubuntu.seed oem-config/enable=true initrd=/install/initrd.gz quiet --
LABEL cli
  menu label Install a comm^and-line system
  kernel /install/vmlinuz
  append  file=/cdrom/preseed/cli.seed initrd=/install/initrd.gz --
LABEL cli-expert
  menu hide
  kernel /install/vmlinuz
  append  file=/cdrom/preseed/cli.seed priority=low initrd=/install/initrd.gz --
LABEL ltsp-server
  menu label Install an ^LTSP server
  kernel /install/vmlinuz
  append  file=/cdrom/preseed/ltsp.seed initrd=/install/initrd.gz --
LABEL check
  menu label ^Check CD for defects
  kernel /install/vmlinuz
  append  MENU=/bin/cdrom-checker-menu initrd=/install/initrd.gz quiet --
LABEL rescue
  menu label ^Rescue a broken system
  kernel /install/vmlinuz
  append  rescue/enable=true initrd=/install/initrd.gz --
LABEL memtest
  menu label ^Memory test
  kernel /install/mt86plus
  append -
LABEL hd
  menu label ^Boot from first hard disk
  localboot 0x80
  append -
DISPLAY isolinux.txt
TIMEOUT 0
PROMPT 1