Converting single 2D part shape defined DXF file into single CNC part program code for 2 axis CNC cutting machine. Recognizing outline and/or hole from part shape during DXF part shape definition file reading. Automatically generating round shape lead in / lead out line in a optimal position. User can set round size. Generating CNC part program code for plasma / laser / knife cutting / water jet etc. User can set G code, M code, argument code.