Image description: do-until structure
This image presents a flowchart that shows a do-until structure for a PERFORM statement that has UNTIL and TEST AFTER phrases.
The following pseudocode describes the processing flow:
Step 1: Start PERFORM statement
Step 2: Do one iteration of PERFORM
Step 3: Test condition
Step 3a: If condition is true, loop to Step 2
Step 3b: If condition is false, exit PERFORM statement
Step 4: End PERFORM statement
End of image description.