How to update PRInternalLink?

I'm still experimenting with Templating and things like that. I tried to create a page with +comp+ as content. I thought taking that page and adding a child named comp would be sufficient but it isn't. Everything is resolved on save time or better when the document gets parsed. I can achieve what I want by doing. structure := (PRPathLookup start: self context structure path: '/mytemplate') copy. structure addChild: ((PRComponent named: 'comp') componentClass: MyComponent ). structure document: (PRDocumentParser parse: (PRWikiWriter write: structure document)). But I think there more elaborate versions of doing this. I'm not sure if update on the internal link will help. Then a visitor could probably do the job. thanks, Norbert