How to tag your content
Consider tagging your content! Any page or book can have tags and sub-tags. Here's some examples.
When editing a page, check the right hand side of your screen to add tags. (Books use a different interface)
Click the 'tag name' field to see tags which tag types already exist. For example, you could add the 'Category' -> 'Unity' tag.
Add your own if you think something's missing. Your tags will help other users find similar pages or books, so try to stick to tags which already exist.
Tags are, of course, still a work-in-progress! But it's OK not to use the "Tag Value" field. Remember that you can explore tags by simply clicking one of the fields.

