Shell issues

[SMcNeill]

When using Shell with no parameters the program displays a blank screen which cannot be exited
without going to Task Manager->Processes and manually right-click and end task!?

From reading the above, it sounds like you're writing a program such as this:

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SHELL

And then you mention this:

Also, the Wiki says to use Shell "Cmd /C" or it may hang..

Looks to me like you wrote and answered yourself. What am I missing here?

If you read the CMD help info, you see this:

/C Carries out the command specified by string and then terminates...

If you're just looking to open a command window, and not have it automatically terminate, just do:

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SHELL "CMD"

That /C is for executing commands and closing after, so if you leave it blank, you execute nothing and then close. "CMD" alone should be all you need to open a command window and keep it open for whatever purpose.