IBM System/370 Operator's Reference Manual page 149

OSNS Display Consoles
Sources: GC38-Q260 OS/VS2 Displav Consoles
GC38-02550S/VSl Display Consoles
The CONTROL command (abbreviated K) controls the display console. Each function
of this command is described in an appropriate place in the SRL. To request a
summary of the CONTROL command operands and the functions that they pertorm,
enter the following commands:
{
DISPLAYl
D
f
C,K [,L=
{~}
C,K specifies that a summary of CONTROL command operands is to be displayed.
L= {
~~
} specifies the display area (a), console (ccl, or both (cca) at which the
display is to be presented. If
yo~
omit this operand, the display is presented in the
first available display area on the console through which you entered the command;
(unless routi"g instructions are in effect).
For example, to display a summary of CONTROL command operands in display area
A of console 10, enter:
D C,K,L=10A
A printed summary of Control command formats appears in OSIVS2 (JES 2) com·
mands summary which you will find in this section.
PROGRAM FUNCTION KEYS
Entering Commands with the PFKs
The program function keyboard is a group of 12 keys (called PFKs) located on the
right side of the operator console keyboard. (It is an optional feature of the model
3277 display console, and is not available for the model 158 display console.) One or
more PFKs may be available to
yo~
for entering commands. The PFKs are designated
for operator command entry by the system programmer during system generation.
Each PFK is defined as conversational or nonconversational. The commands associated
with a nonconversational PFK are entered immediately when you press the key. The
commands associated with a conversational PFK are presented in the entry area, one at
a time, when you press the key. You may make changes to them before you enter
them.
In place of keys, the Mod 158 Display Console provides a PFK line (above the instruc-
tion line) and entering of commands by light pen.
How to Display the PFK Numbers
Use the following form of the CONTROL command to display and erase the numbers
in the PFK display line:
{
D PFK}
E PFK
D, PFK specifies that the numbers of the PFKs designated for command entry are to
be displayed in the PFK display lir·e.
E ,f'FK specifies that the numbers are to be erased from tha PFK dispiay line.
Example: To request display in the PFK display line (this line is located immediately
above the instruction iine), enter:
K D PFK
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