An FCONTROL call with a controlcode
value of 35 suppresses output of the line deletion response (!!!,
carriage return and linefeed) at the terminal when the line deletion
character (normally [CTRL]X) is entered. A call
using controlcode 34 turns this output back
on.
In character mode, with standard editing in operation, the
computer outputs !!! CR/LF whenever
the line deletion (cancel) character is entered. This is referred
to as [CTRL]X echo, since [CTRL]X
is the default line deletion character.
You can cause [CTRL]X echo to be suppressed
by calling FCONTROL(35). MPE/iX will still delete the data in the
input buffer, but no !!! CR/LF
will be issued.
[CTRL]X Echo is initially enabled by default
and is reset to the enabled state at FCLOSE.
For devices connected via PAD, the line deletion response
is never printed in response to the line deletion character. If
issued to such a device, these calls will return a CCE condition
code, but no device control action will occur.
For devices connected via VT from an HP-UX local client, these
controlcode values are not supported.
