Request for examples on git log --format:tformat

Greetings,

I was reviewing the tformat parameters on: https://git-scm.com/docs/git-log (middle of the page).

Specifically: %<|(<N>): make the next placeholder take at least until
Nth columns, padding spaces on the right if necessary

I found the instructions regard space formatting to be very confusing. An example would be helpful to illustrate what the proper space formatting syntax is:

Ex: git log --format="tformat:%h %<(15)%an %s"

0123456 Author Name Commit message - author name is formatted to be padded with space to occupy at least 15 characters

All of the special symbols %<|(<>) made me confused to what was required and what was describing the syntax.

Thank you!

-daniel