[Elecraft] K3 CW to Data and "ES" for ampersand?

[Leigh L Klotz, Jr.]

On p.31, the K3 manual says that the CW abbreviation ES isn't used in 
data modes and might lead to confusion.

Why not recognize it in CW-to-Data and send an ampersand?

I believe I read somewhere that ES is actually from American Morse, and 
was one of those characters with a half-space in it (like the old C, 
didit-dit).

73,
Leigh/WA5ZNU