When using MediaWiki\'s markup language, the only thing that I hate is creating numbered lists. The only way I know to create a list is to do something like this:
You can do:
# one
# two
spanning more lines
doesn't break numbering
# three
## three point one
## three point two
Regular old
works as well but probably pisses off someone.
You can put additional HTML formatting in as well to do formatting and the like without breaking the numbering as well. This also works other list formats.
From: http://www.mediawiki.org/wiki/Help:Formatting