title: Autolisp, difference of two dxf files
body: <p>I want to get the difference of two dxf files and want to save it in third file. I want to set the limitation also. If my text shifts upto certain units , it shouldn't be shown in difference.
  'DWG diff' partially does the job. It is not flexible. I cann't set limits and cann't save the diff. Does someone knows better software or Autolisp.</p>