Wikipedia article:
=lorum wasn’t working for me until I found out you had to have the “Replace words as you type” option turned on in AutoCorrect for it to work.
Inspired by The Shining, I used “All work and no play makes Jack a dull boy,” repeated ad nauseam, as a place-holder for my doctoral dissertation text (so I could work out the formatting early in the writing process).
I made darned sure there weren’t any stray lines of this left over when I’d finished writing the thing!