The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/11/collation.html
Description:
The font size of level 4 headlines (<h4>, e.g. "23.2.2.3. Creating New
Collation Objects") is remarkably smaller than the font size of level 5
headlines (<h5>, e.g. "23.2.2.3.1. libc collations") which is
counterintuitive and at least a little bit confusing.