> If you have a real async terminal, you will find that it needs some
> form of flow control in order not to drop characters during certain
> operations (eg insert character).

This is not always true; it depends on the terminal, the serial line
speed, and in some cases what the operation in question is.  A tvi950
at 4800, for example, I don't think needs any handshaking.  At 9600 I
_think_ it doesn't but I'm less sure (been too long).  (At 19200 it
definitely does need handshaking for some operations.)

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