yes too small......your player is about 100 tall so 256 is about like a closet size.....there is what looks like a chest pawn in ut ed up  top........click it .....actors will come up....hit the plus ..... go to navigation points .....there you will find player start ......go to map .... look at the floor ....right click......little screen pops up......it will say add player start in there .... select it....then there it will be .....you will find everything you need in there for lights.....ammo...etc.....so you know how to open ed.....subtract a box and tool around a bit ......the rest is just as easy ... just have to know where to go .

like i said you wanta learn i can help you Through TS .......no problem ....i enjoy ppls interest in mapping .....if i can help you out just means another mapper to keep the game alive lol