The drawing can be converted to Microstation DGN format. Special Dialogue Boxes are created to make the program more user friendly. The different piping entities are arranged on layers 1 to 6 (which is compatible with Microstation). Since the program is written in LISP, you can even modify PROGRAM for PIPING ISOMETRIC DRAWINGS further as per your choice. The Iso program is totally based on LISP programs and there are only 4 small symbols or blocks to be inserted as in other programs, due to which there is a lot of saving of Disk space as well as the drawing also has very small size.
4 Programs of OpenPipe are such customized programs. Most CAD packages are prepared in such a manner that these can be easily customized.