Missing section in docs on special characters for constructing anchor link URL

There's a section on how the URL is constructed.  I tried this and it didn't work.  Likely because my page name included a dash and leaving it in would likely confuse the dash with the anchor separator in as described in point 2 but I wasn't able to get the URL to work with or without the dash.

Can we add guidance for characters like : ? / + - ...etc? Since page name support all these characters.

The doc: https://confluence.atlassian.com/doc/anchors-139442.html :

Notes about the full URL:

• The page name is repeated in the URL, after the # sign. The second occurrence of the page name is concatenated into a single word, with all spaces removed.

• There is a single dash (hyphen) between the concatenated page name and the anchor name.

  • The anchor name in the full URL is concatenated into a single word, with all spaces removed.

• The anchor name is case sensitive.