On May 30, 2018, at 2:19 PM, Jyri J. Virkki <jyri at virkki.com> wrote: > > Ah, that brought back some memories! My first "open source" project. > > I wrote a small program to do that which was published in the February > 1988 issue of Rainbow so you could look it up there (page 156). I just pulled that up. I remember that article!