for our vi-lovers in-house and the admins of our customers.
I'd like to do the same now with a reference mug for PostgreSQL, for example with the most important Meta-commands, sys tables, etc. I have nearby a copy shop which would produce it based on a JPEG file.
Before designing our own, I wanted to ask here if such a beast exists already or, if not, maybe even a Reference Card in PDF or JPEG to use it as a starting point.