Pf1-Pf12 Keys - IBM 3270 Operator's Manual

42
Typewriter Keyboard
In addition to the functions permanently assigned to other keys
(such as, Backspace, Tab, Backtab, etc.), application programs
can assign other programmable functions to the PF (Program
Function) keys.
Application programs can define the action that will occur
when anyone of the P F (Program Function) keys is pressed. By
doing this, each program can tailor the keyboard to fit its
specific needs. This adds flexibility to the 3270 keyboard and
makes it a more powerful input device. One program might
replace the document on the screen with a different one
whenever PFl is pressed. When working with a different
program, pressing PF 1 might be a signal that you have keyed in
all of the source data that you have available.
To determine the use of each key and the action it causes,
refer to the User's Guide of the application program with which
you are working.
By now you should be quite familiar with your display
station. If there is any area that you're still not sure about, turn
back and reread the section that discusses it. Press the key or
keys in question, and watch the result. If you still have
questions, now is the time to get them answered. Ask your
supervisor or an experienced operator for an explanation.
For examples of the work normally done on 3270 display
stations and further discussions of errors and correction of
operator errors, turn to page 90.