CMS Section vs. Category
 

I am using vbulleting currently only as internal knowledgebase and I am trying to figure out the best way to present the articles on the CMS.

I do like the way sections can be collapsed using the (+) which is why I used them .. Here an example

http://i48.tinypic.com/v6s11v.jpg

Each section will only have one article. Now what I am trying to figure out is where the categories are being used ...

Would it make sense to have for example three categories (Linux, Windows, MSSQL) ?