Attention interrupt key

What happens if you change your mind about something you enter and you want to stop processing? Another key on your keyboard interrupts a process and takes you back to the READY message. Sometimes this key is labeled PA1. Locate the attention interrupt key on your keyboard.

Exercise
Enter the following after the READY message: `HELP logon help` You then see: `INVALID KEYWORD, HELP REENTER THIS OPERAND -` To get out of this process, press the attention interrupt key. You see the READY message again.