AutoLISP將多段線各個端點座標寫入外部文件

AutoLISP將多段線各個端點座標寫入外部文件，代碼以下。post (defun c:test()   (setvar "cmdecho" 0)   (setq ffn (getfiled "選取文件" "" "doc" 1))   (setq ff (open ffn "w"))   (close ff)   (princ "\n選取多段線：")   (setq ss (ssget))   (

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