IBM 3270 Operator's Manual page 77

Operator Console Keyboard
To correct this error using Insert Mode, you would move the
cursor to the character position containing the W in WTOR.
REPLY 07, 'ANSWER WTOR MESSAGE 8'
(This is the position where the word TO should begin.)
Pressing the I NS MODE key places the keyboard in Insert
Mode. Now, keying of the missing information results in the
sequence shown in Figure 32.
Key Pressed
T
o
Space
Figure 32. Inserting information moves some displayed data to the right.
The missing data has been inserted without disturbing the data
that follows it. You may have notices that, as characters are
inserted, all characters to the right of the cursor are shifted into
the blank character positions to the right of the last displayed
character. The INPUT INHIBITED indicator will turn on, and
your keyboard will be disabled if you try to insert more
characters than the field will hold.
As a general rule, the number of characters you can insert into
a field is limited to one character less than the number of blanks
remaining in that field.
If the field is a large one and covers more than one line, and if
the situation calls for it, during the insert operation, characters
will shift from the end of one line to the beginning of the next.
Pressing the RESET key returns the keyboard to its normal
mode of operation and resets the I NSE RT MOD E indicator. The
correction made, you would now move the cursor to the next
character position into which you want to enter data.
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