It is a mnemonic, to help remember!
I remembered!
Here is one from over FIFTY years ago! A biochemistry class.
On Old Olympus Towering Top A Finn and German Viewed A House.
And everyone thought I’d forget it!
Just what to do with it? Not so sure.
In neuroanatomy it was : on old Olympus towering tops, a fat armed girl vends snowy hops.