How about "Lazy Updates to the Manual"?
Good point made:
"The person who makes the docs may not describe the feature the way you do, so you don't find what you're looking for in the table of contents and therefore you assume it doesn't exist."

I'm sure someone at PG reads all the posts each day so maybe as questions are posed to things already in the manual but worded or "termed" differently they could just add this term to the table of contents in the manual.

Maybe even add links in the manual definitions to posted user solutions.

I've noticed most times a user solution will often include very useful info on other features and procedures in the programs.
Basically the users would be writing the manual.

The "Lazy Updates" could be posted regularly until the User manual covered all bases.
Or am I asking for trebles (as in "The Trouble With Trebles"?)
Just a thought.