Redmine

This is not documented on the wiki formatting quick reference, nor, as far as I can tell, anywhere else

It's explained here (Help -> Wiki Formatting):
http://www.redmine.org/wiki/redmine/RedmineWikiFormatting#4

Thank you, Jean-Philippe. That is indeed quite helpful.

It would be great if this could be included with the Redmine distribution itself. Perhaps a link at the bottom of the quick reference could take a person to it? I feel nervous pointing people off-site for that (and that could also be an issue on intranets), so if it could be a built-in feature, that'd be ideal.

Partial patch at #778

It still references an offsite page for the details, which in my opinion isn't a good solution