It’s mostly how would you solve this programming problem, or reminders on syntax, scaffolding a configuration file etc.
Often it’s a form of rubber duck programming, with a smarter rubber duck.
All of this can be solved with a 3-20MB PDF file, a 10kb snippet/template file, and a whiteboard.
Don’t forget the duct tape
"Dropbox will never work, you can already build such a system yourself quite trivially by getting an FTP account and mounting it locally with curlftpfs"