sound_play(snd_menuselect)
switch menuchoice
   {
   case 0:   //layout
     global.keyconfig += 1
     if global.keyconfig = 4
     global.keyconfig = 0
     break;
   case 1:   //full
     if global.fullscreen
     global.fullscreen = false
     else
     global.fullscreen = true
     window_set_fullscreen(global.fullscreen)
     break;
   case 2:   //defaults
     global.fullscreen = false
     global.keyconfig = 1
     window_set_fullscreen(global.fullscreen)
     break;
   case 3:   //quit
     ini_write_real("Settings","keyconfig",global.keyconfig)
     ini_write_real("Settings","fullscreen",global.fullscreen)
     window_set_fullscreen(global.fullscreen)
     room_goto(rm_menu);
     break;
   default:
     break;
   }