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• Insert
The insert function places the keyboard in insert mode. This mode allows you
to insert a character or characters into the middle of an input field without
changing the characters that are already displayed there. An insert symbol (A) is
displayed in the status line to remind you that insert mode is active.
The following items apply while the keyboard is in Insert mode:
If the cursor is located in an input field having a null character in any
position in the field beyond the cursor, entering a character causes the new
character to be entered at the cursor position. All remaining characters
within the field (except for null characters and characters to the right of a
null character) are shifted one position to the right. If the position occupied
by the cursor at the time of the insert operation is a null, no shifting occurs.
After all null characters at or beyond the cursor position in the field have
been overwritten, or if there are no null characters, attempting to enter
another character locks the keyboard. The "more than" indicator
(X op>
» is displayed on the status line. To unlock the keyboard, press
the Reset Key sequence defined for your terminal and reposition the cursor.
If the current field spans more than one line of the screen, the insert
operates only to the end of the current line.
Using this function when the cursor is located in an attribute character
position or is in a protected field locks the keyboard. The "go elsewhere"
status line message (X < -op- > ) is displayed. To unlock the keyboard,
press the Reset Key sequence defined for your terminal and reposition the
cursor.
If the display is in enhanced null/blank processing mode, characters can be
inserted when the field contains either trailing blanks or nulls.
To exit insert mode, press the key sequence for Reset, Enter, Cursor Select, or
any other function that causes host communication .
• Delete
OP2
If the cursor is located in an input field, using the Delete function removes the
character at the position occupied by the cursor. The cursor does not move. All
remaining characters in the field to the right of the cursor and on the same line
shift one position to the left. The empty position at the end of the row or field
contains a null character. If the input field occupies more than one row,
subsequent rows are not affected.
Using this function when the cursor is located in an attribute character position
or is in a protected field locks the keyboard. The "go elsewhere" status line
message (X < -op-
>
X) is displayed. To unlock the keyboard, press the Reset
Key sequence defined for your terminal and reposition the cursor.
OP2
Operational
Note: The following 3270 functions cannot be used when operating as the 3708 control terminal: Erase
EOF, Erase Input, DUP, FM, PA keys, Clear, CURSR SEL, ATTN, SYS REQ and Delete.
Chapter 2. Operating in Full-Screen Mode
2-7
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