Thread:Project:Support desk/Link like tag or function extension

Hi!

I want to write an extension but I'm quite new to MediaWiki so I need some help for the first steps. I imagined the extension like a link which receives parameters, process some data and returns a file. So for a user it looks like a link, but for an editor it's like a parser function or a tag I think. Could you help me how should I start? How can I create a parser function that acts like a link?

Thanks