TSO prompt - ACF versus question mark

Document ID : KB000071397
Last Modified Date : 20/02/2018
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Question:
Some users under TSO ACF see ACF at the prompt, and others see a ?  Why?
Answer:
This has to do with the TSO PROFILE setting for MODE/NOMODE. With MODE you will get ACF, and with NOMODE you will get the ? at the prompt.