Both work for single line code, but I have no idea how
to make it working
for multiline code. I also tried <source> tag.
Well, the advice Daniel J. Barrett is giving in his "MediaWiki - Wikipedia and
Beyond" (
http://oreilly.com/catalog/9780596519681, p. 65) for komplex numbered lists
is not using wiki syntax but pure HTML tags.
hth
Frank