Ha ha, good one. Yes, it wasn't meant to show anything new, just put it because I've seen many people don't know this sort of stuff - basic command line usage.
Edit: Actually, I had originally meant to write "At the DOS/CMD prompt", but left out the DOS part because who knows how many people even know what DOS is these days ... :)
COPY NUL A
DIR A07/25/2017 12:12 AM 0 a