Date   : Sat, 11 May 1985 10:28:00 MDT
From   : CSTROM@SIMTEL20.ARPA
Subject: YAM/MODEM new generations

While I see your points, there seems to be a consensus among those who
are planning to actually implement the changes to the protocol that if
things are made significantly more complex we will lose the
universality of Christensen protocol. Anyone is of course free to add
whatever bells and whistles he likes (Pro-YAM for example supports
Christensen, YAM [1K blocks], Kermit and Compuserve B protocols) but
the basic definition of the protocol should not be made needlessly
complex.
By the way, YAM's protocol allows an arbitrary mixture of 128 and 1024
byte blocks, and SOH signaling the former wile an STX the latter.

-Charlie