>>Now you're starting another archaeology thread. AFAIR, most of the code abbreviations had some meaning while they were used for teletype - CAN was a signal to cancel a connection, BEL rang a real bell, LF forwarded the paper one line, CR returned the printing carriage to the left side of the paper... No, I'm not that old to have used the thing, but I knew some people who had to learn these codes, for historical reasons. I've found them described somewhere... some 15 years ago, or so.
>
> Regular ASCII Chart (character codes 0 - 127)
>000...(nul)...016...(dle)
>001...(soh)...017...(dc1)
>002...(stx)...018...(dc2)
>003...(etx)...019...(dc3)
>004...(eot)...020 ¶ (dc4)
>005...(enq)...021 § (nak)
>006...(ack)...022...(syn)
>007...(bel)...023...(etb)
>008...(bs)....024...(can)
>009...(tab)...025...(em)
>010...(lf)....026...(eof)
>011...(vt)....027...(esc)
>012...(np)....028...(fs)
>013...(cr)....029...(gs)
>014...(so)....030...(rs)
>015 ¤ (si)....031...(us)
>
>Here are all of the control codes. If you need the rest of them (ASCII codes), let me know.

I finally found an old chart in an ancient PL/I book. Let's see, NAK is 'Negative Acknowledge', SYN is 'Sychronous Idle'... :)

The MSDN charts will serve most needs, however, as they have all the printable special characters. Those are the ones I was specifically searching for...