The number of vi/vim commands is relative to your age

I've noticed that people older than me have always known just a few more vi commands than I do.

I'm in my 40s, so clearly I know about 4:

Writes and quits (I consider these variants of the same thing):

    
:w
:q
:q!
:wq
ZZ

  

See the line numbers: :set number

Delete everything from top to bottom (must be at top, easily remembered by mumbling duck, duck, duck, GOOSE): :dddG

Search for a string: /

And that's probably it. I think I used to know how to cut a line and paste a line, but I'd have to look it up to be 100% correct on the syntax.

Anyone in their 50s or 60s care to add to this dazzlingly long list of inadequacy? Not looking for a cheat sheet or the man page :-p