Hi Stan,
It's just another way of denoting chapters after you go through the 24 letters of the greek alphabet. The first 24 chapters would typically be named Alpha through Omega. Then the next 24 would be named Alpha Deuteron through Omega Deuteron, meaning "second Alpha" and "second Omega".
Then after deuteron you have...
Triton
Tetarton
Pentaton
Hexaton
Septaton
etc.
They're just greek words meaning "the second", "the third", etc.
Phi Sigma Kappa is the main group using this convention.
On badges and other documents, this is represented in several ways. Alpha deuteron might sometimes be A', or it might be A with a small delta superscript, or Alpha with a small 2 superscript, or it might be A and then a small delta with a line beneath it.
wptw
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