Thank you for this reply. It makes perfect sense. I wasn't storing what was returned and printing it, so nothing was output to the screen. Returning and outputting are not inherently equivalent.
I just tried out your example. Cd doesn't return a value so nothing is output with this example, but when I used dir instead I got a nice screenful of info. :-D I'm not on my work computer right now so I can't try out my tf command yet, but I will give it a try later. Thank you again for the answer.
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