Without a relevant session attribute I was struggling to find a way to detect if the session was in single-user mode.
Took me a while to realise a fairly simple solution so I though I'd share:
Using CAN-DO() as a string comparison function perpetuates a bad practice from the dark days before Progress had proper string functions. CAN-DO() is a security oriented function which can behave in very unexpected ways when used to compare strings.
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