PAl
and
PA2
Keys
P
Al
and PA2 are Program Access (P A) keys, and they perform the function
that
their name implies;
that
is, they provide a means
of
signaling the program
or communicating with it. The
PAl
and PA2 keys are alternate function keys
and can only be used when the ALT key
is
held down. While your display
station
is
signaling the program, the Do Not Enter - Time (
)(
·:f
) message
appears
in
the Operator Information Area, disabling your keyboard. Most
programs, when replying to these keys, turn
off
the Time message. However,
this
is
up
to
the program. The program that
is
operating in the host system at
the time also determines
how
these keys are used.
If
you
are not familiar with
the use
of
the
PAl
and PA2 keys, ask the appropriate person in your organiza-
tion about the use
of
PAl
and P A2 or refer
to
the appropriate user's program
guide.
PFl-PF12
Keys
Application programs can assign programmable functions to the Program
Function
(PF) keys. On
the
7S-key Typewriter keyboard there are 12 PF
keys on the front
of
the top row keys (Figure 3-13). The PFI through
PFl2
keys are alternate function keys and can be activated only while
the ALT key
is
held down.
Figure 3-13. PF1-PF12 Keys
3-14
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