IBM 3270 Manual page 166

8. Type a new time, but do not press Enter.
For example, let's type 11:53 am:
Current time is 10:11 :05.1 2
Enter new time: 11 :53_
The pause symbol will appear at the bottom
of your screen:
P P
9. Press the Alt and Pause keys.
The recording finishes playing on the screen.
When the recording is done, your screen
should look like this:
A>vol
Volume in drive A has no label
A>time
Current time is 10:11 :05.12
Enter new time: 11 :53
A>ver
IBM Personal Computer DOS Version n.nn
A>_
That's all there is to it.
Chapter 11. Recording/Playing/Erasing Keystrokes 11-15