AutoCAD 对象标高和 Z 坐标归零

在命令行中依次键入以下两个命令：

(command "MOVE" (ssget "x") "" "0,0,0" "0,0,1e99")
(command "MOVE" (ssget "p") "" "0,0,0" "0,0,-1e99")

Re: How to globally change all z values to 0