When you enter the command, the cursor must be in the entry area or under the ENTER indicator in the instruction line, but it need not be at the end of the command. Pressing the ENTER key or selecting the ENTER indicator causes the command to be read and processed by the system. Commands other than the CONTROL command disappear from the entry area and reappear in the message area. If the message area is full, the command may not appear immediately; to have it displayed, you may have to delete some messages.
The PA1 Key:
Each time you press the PA1 key, you see a command that you entered previously. The maximum number of times you can press the PA1 key to see previous commands is specified by your installation with the RBUF option on the CONSOLxx parmlib member. If you exceed this maximum, you see the same commands again.