IBM 3270 Manual page 157

3. If you work station is not in Control Mode,
press the WSCtrl key.
This line should appear at the bottom of your
screen:
I
wseTRL
4. Press the Record key (PF16).
This message appears:
Enter a unique name for the recording about to be made.
WSCTRL AUTO REC NAME
5. Choose a name for this recording.
Each keystroke recording needs a name, so
you can tell the system which recording you
want to play. You can use any name that is
not being used by another recording. If you
do not remember the names of your keystroke
recordings, press the PF1 key . You will see a
list at the right side of your screen. You can
press the PF1 key again to remove the list.
The name can be from 1 to 8 characters long.
It can contain letters and numbers but no
blanks.
11-6 Book 3 - Using the Control Program