A

Outside of CTRL-? K, not all of Emacs's online documentation
will reflect the changes
listed below.  We have to modify the way that Emacs help works before
it will be accurate.  


B

For those who care about the mechanics of this change:  The factor
that will actually cause Emacs to rebind its CTRL-S and CTRL-Q commands
and produce the warning message is whether the NXON (need X-ON) parameter
is set for that particular terminal type in the @i(/etc/termcap)
file.  (Emacs will always check @i(/etc/termcap) for this setting
when it starts up.)  NXON is set for terminal type VT125.  (It may
be set for other, unsupported terminals as well.)  All hardwired
Athena VT125, Pro350, and VT240 terminals have been set to have
a default TERM variable of VT125 in the @i(/etc/ttys) file that
defines all default terminal types.