templates/boot/grub/handler.lst

   1 parser.sh: sh
   2 reader.normal: normal
   3 terminal_input.at_keyboard: at_keyboard
   4 terminal_input.serial: serial
   5 terminal_input.usb_keyboard: usb_keyboard
   6 terminal_output.gfxterm: gfxterm
   7 terminal_output.serial: serial
   8 terminal_output.vga: vga
   9 terminal_output.vga_text: vga_text