[GreenKeys] Code Permutation Tape Printer

[Jim Haynes]

On Wed, 27 Nov 2013, airrelic at juno.com wrote:

> right hand side of the shaft. I can't decide if 'permutation' in this sense

For reasons unknown to me, and I don't know much about mathematics, but
for some reason binary codes like Baudot have been called "permutation
codes" in the industry.  Which doesn't seem like a permutation at all
to me.