Dynamic Content in CI

[eluser]seismic[/eluser]
Can somebody give me a link to guide how to put dynamic content in the content-div (in view file) I mean how to put the "variable content" (article01, article02, ... ) properly? How is it done in CI way?
I've check out the guide here and i couldn't find any directives to implement this common thing.
Should I handle the content files in the view folder and load them by passing $variable (taken from the link ?page=article01) through (my default) controller into the index.php (main html file) in the view?
So then choosing it normally by switch/if and php include?
What about the Model part?

How do you make it?