Re: the early teletype

Telex calls were charged by the minute and most Telex machines had paper
tape readers and punches, so what one usually did was to type up the
message on tape first, then make the call and run the tape through at
full speed.

>
Later, say late 70s / early 80s, devices like HP 264x terminals with
cassette data storage drives were used to pre-type and store messages,
then send from tape.  I saw this exact setup used in a government office
in Saudi Arabia.