原型:
DFTSYM/'symbol_name',obj,point,{SCALE,scale[,RATIO,ratio]|SIZE,length,height}[,IFERR,label:]


point
An existing point which represents the location of the anchor point. The point is projected to the nearest drafting object component. If the point cannot be projected to a component because of its location, an error occurs.

急啊,救命!!!!!

是点坐标吧，不是点位置