Four 18-byte actor slots for the laser beams, in the same field order as Jetman_Slot. They are the first of the 18 actor slots, which run up to Actor_List_End. Every slot is laid out the same way:

Offset	Contents
00	Type (the sprite ID)
01	Screen column
02-03	World X
04	Y
05	Horizontal speed
06	Vertical thrust
07	Colour
08	Flags
09-0F	Sprite cache, cleared by ClearSpriteCaches
10-17	State specific to the actor type