I recall reading a recent article around paper sales being down but liquid paper sales remaining unusually strong. Wish I could find it.
Edit: Found the article in question https://www.theatlantic.com/technology/archive/2019/03/who-s...
Disclosure: I don't use correction fluid, although I remember owning a bottle of Tipp-Ex sometime in the 90s when handling printed paper was more common for me.
For example, not all internal processes might be on the computer. Or external processes often still used paper forms, especially externally. A typewriter was also handy for shipping/courier forms, and for addressing envelopes. (When I was doing shipments for a small computer products wholesaler, UPS still had us record shipments as line items in carbon-forms book, and tear off the top sheet or more to hand to the driver when they came to pick up the boxes for the day.)
Somewhere in there, the IBM Selectric II Correcting typewriter came out, which I imagine took some Liquid Paper sales. I had a chance to use one of these, after using computers for years, and they were still a blast. The "mechanical keyboards" meme has nothing on the visceral, powerful typing experience of a Selectric II. (I fully intend to get at least one, in excellent condition, once I'm out of student/startup-apartment mode.)
The BoL includes details about the freight, from/to parties, the carrier (me), etc. And the serial number of the trailer seal.
Sometimes I notice that the number on the seal doesn't match the paper work. I take the paperwork to the shipping office. They either print out corrected paperwork, or they use whiteout (or Liquid Paper) to cover the incorrect number and write in the correct one.