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keyboard as shown. World Trade keyboard will be
different, but the functions will be similar.
System Request/Attention Key
SYS
REO
ATTN
The upper shift function of the Sys Req/ Attn key is
used for signing onto the system.
The lower shift function of the Sys Req / Attn key sends
an attention command to the system.
An attention command can:
• Temporarily stop the present display station activity
and allow selection of a new activity.
• Notify the system that the display station is ready to
select a new program or activity.
• Request that the keyboard be unlocked (after normal
error recovery action has failed) so that data entry
can continue.
Command Key
8
Pressing the Cmd key directs the system to disregard
the normal function of the top row of keys and instead
perform the function assigned to that key in the
program. A keyboard template indicates to the operator
the command functions assigned to the top row of keys.
Appendix B. Keyboard Functions
Delete/Insert Key
~
~
The upper shift function of this key is used to delete
data from the display screen. When the Delete key is
pressed, the character above the cursor is deleted and
all characters to the right of the cursor (in the same
field) are shifted to the left one position.
The lower shift function of this key allows a character or
characters to be inserted into an existing input field on
the screen without destroying data already there. New
characters are inserted at the cursor position and the
data above and to the right of the cursor is shifted to
the right one position for each character inserted. The
cursor also shifts to the right one position.
Erase Input/Home Key
ERASE
INPT
HoME
The upper shift function of this key erases data in all
input fields that have been modified. When this key is
pressed in a program formatted display, all fields that
have had data entered are erased. The cursor moves to
the home position on the screen.
The lower shift function of this key moves the cursor to
the home position of the formatted screen. It moves the
cursor to the first input position on the upper" left corner
of the display screen in free key mode.
Appendix B. Keyboard Function
5251 MIM
B-1
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