Rational Developer for System z
PL/I for Windows, Version 8.0, Programming Guide

PROMPT

The PROMPT option specifies whether or not colons should be visible as prompts for stream input from the terminal.

Read syntax diagramSkip visual syntax diagram             .-N-.
>>-PROMPT--(-+-Y-+-)-------------------------------------------><
 

PROMPT(N) is the default.

Rational Developer for System z
PL/I for Windows, Version 8.0, Programming Guide