To bzImage and recent zImage kernels, SYSLINUX 1.30 and higher will
identify using the ID byte 0x31. PXELINUX identifies using the ID
-byte 0x32. The ID range 0x33-0x3f is reserved for future versions of
-SYSLINUX.
+byte 0x32, and ISOLINUX 0x33. The ID range 0x34-0x3f is reserved for
+future versions or derivatives of SYSLINUX.
++++ DISPLAY FILE FORMAT ++++