Using the EPI Recording and Playback Options › How Playback Works

How Playback Works

After you supply the member and data set information for the EXEC to play back, the EPI follows the following process:

1. The playback function:
   • Starts running the selected REXX EXEC
   • Displays the current screen image for the affected session

   This results in short messages describing the first keystroke or keystrokes the EXEC will issue.

2. Press enter.

   The first SESSCMD command processor in the EXEC executes.

3. The playback function does the following:
   • Displays new session screen image that reflects the response of the session to the SESSCMD Displays the current screen image for the affected session
   • Freezes the screen image

   This provides time for you to study the frozen screen image and observe how the SESSCMD affected the session.

4. Press Enter

   The playback function displays the next screen image.

5. The playback function displays new messages describing what action the next SESSCMD in the EXEC will do.

   The next SESSCMD executes.

6. The playback function freezes the screen image again.

   This lets you review the effect of the SESSCMD that just executed.

7. Press Enter again.

   The next session screen image appears and steps 5 through 7 repeat until the EXEC finishes executing.

8. The playback function:
   • Returns you to the EPI Recording Primary Menu, if your EXEC contains no SAY statements to display output from the EXEC
   • Uses the SAY statements in the EXEC to write output data to your screen