[Mediawiki-l] Extension: how to parse wiki text?

[Jean-Christian Imbeault]

I have written a mediawiki extension for 1.4.0 that returns text that 
contains wikitext. For example it contains tags like [[article title]].

The problem I am facing is that the wikitext is not being interpreted 
but is being displayed 'as-is', i.e. as [[article title]] and not as a 
link to an article.

What is the correct way to get this text parsed so that wikitext is 
rendered properly?

Thanks,

Jc