mob/verb/
Multi_Tile(I as icon, IS as text)
set category = "Icon"
usr.move_AddFOBJ(icon(I,,icon_state=IS),IS,1,0)
When I compile, it says "move_AddFOBJ" is an undefined proc. I've seen it used in demos and libraries without people having to define them.
Other demos and libraries must either have move_AddFOBJ() defined somewhere inside, or they include another library which provides that proc.