You're either being an ass or are truly uninformed. Or possibly both.
In the old days, back in the early grades, when one had to visit the restroom one was required to display one finger or two thus indicating which function was desired.
I have no idea why the nuns wanted such information, but it indeed was required and is indelibly imprinted on my memory (and my knuckles).
I'm going back to preparing some important documents (doing my taxes) for data review (checking arithmetic) by the an agency (IRS) of the federal government.