The two program access (PA) keys have special meaning in ISPF and File-AID. They are not equated to ISPF or File-AID commands, and they may not be reassigned.
Normally, you should not use PA1 while operating in File-AID full screen mode. However, there are two exceptions.
If you press PA1 after the keyboard has been unlocked by File-AID, it is treated like PA2 (RESHOW). It does not cause exit from File-AID. However, if you press PA1 a second time without any intervening interaction, it causes the current processing to be terminated and the ISPF PRIMARY OPTION MENU is redisplayed.
If you press PA1 after the keyboard has been manually unlocked (by pressing the RESET key), it usually causes the current processing to be terminated. The ISPF PRIMARY OPTION MENU is redisplayed.
You can use PA2 to reshow the last full screen image displayed by File-AID.
You may need to reshow the screen if you accidentally press the ERASE INPUT or CLEAR key, or if you have typed data on the screen that you want ignored and have not yet pressed ENTER or a PF key.
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