Topology comes from the mixture of 2 words: topos (place) ans logos (word/explanation/intelligence). It's about how it came to look the way it does (like landscaping), the reason things look the way they do.
So, the question could be rephrased as: are you trying to create a logical tree of the subjects covered in all existing pages?
If bongowongo meant something else, he/she can clarify (what i explained is the meaning the sentence carries).
The link proposed above links to all special pages, that will not give you what you are looking for.
I realized that people need some help with the actual use of the wiki software, so I wrote a couple of articles. Please read the articles linked on my user page. Look at the section titled "ongoing", and read the articles on categories. You will find a link in it that will give you access to the structure you are looking for in the section "How to display the index of the existing categories".
Just so you know, there was no predefined structure, so all the categories end up forming a flat structure instead of a tree.
Categories are the equivalent of folders. They should be hierarchical.
What needs to happen now:
- create a list of top categories
- create some subcategories
- recategorize pages by placing them in the subcategories
The top of the tree should not change if it's comprehensive when created.
Also, no page should be placed in a category. The proper place should be a subcategory. That way, categories will automatically create the structure you are looking for, and enable people to drill down subject matters.
If there is no clearly predefined structure, we can not expect people to place their writings in the proper place. We need a page instructing people on how to pick the right categories, rather than merely telling them to categorize. It's simply not enough.