Is it possible to have a wiki inside a site?

Lets say I have a site with many pages..One of them is a page called projects where say students will write about th开发者_如何学JAVAeir projects. Can I have a wiki JUST for this page which will have the same theme as the rest of the pages? Can I put the whole thing in a frame?

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Can I have a wiki JUST for this page

Yes. You'll just need to find, or write, some wiki software then configure your server to use it for that URI. The specifics depends on your server and language of choice.

which will have the same theme as the rest of the pages?

So long as the software you use gives you sufficient control over the template

Can I put the whole thing in a frame?

Yes, but why? And "Eugh!".

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You could use an iframe (Inline frame) for this, but it would seem easier to me to just code the page yourself using PHP and a relational DBMS (such as MySQL), since it's really just one page and should be relatively easy to implement.