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Terminal Control
Line Modify Mode
When the terminal is in Remote mode and Character mode, and you are communicating
interactively with a host computer, you may sometimes enter an erroneous character string
to which the computer responds with an error message. If the character string is a lengthy
one and the error consists of only a few characters, it is a nuisance to have to retype the entire
string. In such a case, you may instead enable Line Modify mode (which temporarily switches
the terminal to a special form of Block mode). You may then move the cursor to the erroneous
line on the display and correct the character string. When the string is edited to your
satisfaction, you retransmit the line to the host computer by pressing either the
1:1
key or
the. key.
Note that while Line Modify mode results in a block transmission, it is completely indepen-
dent of the Block mode function described earlier in this section (you do not have to first
enable Block mode). In fact, Line Modify mode is a feature that was specifically designed for
use when the terminal is operating in Character mode, and will function only in Character
mode.
From the keyboard, you enable Line Modify mode using the
LINE MODIFY
key. Line modify
mode is automatically disabled when you press either
1:1
or • . If you change your mind
and wish to disable Line Modify mode before retransmitting the command string, press the
LINE MODI FY
key again and the terminal will return to normal Character mode.
For each line, the terminal remembers the position of the first character entered from the
keyboard. Then when you re-transmit a line in modify mode, only the portion of the line
entered from the keyboard is retransmitted; any prompt characters preceding the command
string are ignored by the terminal. For more detailed information about this feature refer to
the discussion of the
Start Col
field of the Terminal Configuration menu in Section 3.
Modify All Mode
When the terminal is in Character mode, you can enable Modify All mode, which switches the
terminal to a special form of Block mode. Modify All mode is the same as Line Modify mode
except that it is not disabled when you press
1:1
or • .
From the keyboard, you enable and disable Modify All mode using the
MODI FY ALL
key.
From a program executing in a host computer, you enable and disable Modify All mode using
the following escape sequences:
ENABLE:
Ec &k1M
DISABLE:
Ec &kOM
A Modify All mode designator is maintained in non-volatile memory. When you change
modes using the
MODI FY ALL
key, you also alter that mode designator in non-volatile memory.
When you change modes using the escape sequences, however, the designator is not altered.
2-3
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