git log format documentation/manpage

Hi I'm trying to replicate the "oneline" log format and add notes to it. What I can't figure out:

1. What is the format string that corresponds to pretty format "oneline"?
2. What is the placeholder for the title-line? By searching for "title-line" in `man git log` I couldn't find anything. Surely this is in here somewhere?       
   Searching for `full-commit-message` also left me empty-handed.
3. How can I display notes (%N from `git notes add`) as in-line information (stripping away newlines at the end)?

How do I figure out the placeholders?

Suggestion for manpage improvements:
1. the pretty formats (oneline, short, ...) should come with a (t)format string that it corresponds to. They will act as great examples.
2. Make sure the descriptions of the pretty formats ("<title-line>", "<full-commit-message>", ...) are searchable.

Kind Regards, David, kaddkaka, Moberg