If you know how to program using Xlisp-Stat, you can extend
Arc to add new smoothers, new fitting methods, new menu
items, and the like. The document
extend.pdf explains how to do the extension.
You will almost certainly also need some additional computer code to see how
Arc is written. For this purpose, you can get the directory ExtendArc
Windows (zip file),
Macintosh (sit file),
Unix (shar file).
Last modified June 13, 2000.