[net.unix-wizards] Why does the

jons (11/02/82)

	The documentation for the tty driver clearly states that no processing
is done in RAW mode. In real life, the driver echoes certain non-printing
characters such as ACK. It is necessary to explicitly disable ECHO when in
RAW to prevent this from happening. It is obvious from the driver source
listing that this is intentional. Can anyone tell me why?

					Jon Steinhart, Tektronix, Inc.

gwyn@Brl@sri-unix (11/17/82)

From:     Doug Gwyn <gwyn@Brl>
Date:     12 Nov 82 19:19:56-EST (Fri)
The correct statement would be that no interpretation is done
on RAW-mode input characters.  ECHO is an orthogonal attribute, as it
should be.  Indeed, current tty drivers provide a large number of
orthogonal characteristics, independently for input and output.
This is because no small set of options can satisfy all applications.