How to use a global ignore file in Mercurial

I got tired of manually adding common elements to the .hgignore-file, so after some quick research the option for a global ignore file presented itself as the solution to my problem.

Just a few lines in the Mercurial user file is needed:

[ui]
ignore = C:\<some path>\mercurial.ignore

Example content for the ignore-file:

target

This information is also available in the user manual.