On Tue, 05 Feb 2008 21:46:46 -0600, Vic Smith
wrote:

Heard a John McCain stump speech today.
John talked about speaking in tap codes to fellow POWs about
a Republican Governor who was trying to get the guys released.
That governor was Ronald Reagan.
Anybody know how to spell Ronald Reagan in tap code?
Is that morse code?

It's a cipher code based on a two sided square. We used to teach it
in the original SERE school which wasn't called SERE back then - way
back then - there. :)

Found it. Here's the article.

http://en.wikipedia.org/wiki/Tap_Code