Description: Set the area where the mouse can freely move Mapped Command: DEFINE MOUSE WINDOW FROM FUNCTION __DefineMouseWindow(Pos1_a,Pos1_b,Pos2_a,Pos2_b) msetwin(__XdGE(Pos1_b),__YdGE(Pos2_a),__XdGE(Pos2_b-1),__YdGE(Pos1_a-1)) RETURN(Void)