I've started adding tags to the posts in here. Tags are 'keywords' which provide another method of organizing related info. They're nice because you can use gobs of them where so many categories would be cumbersome. For example, a category for 'trim' would be silly, but a trim tag is useful. And the detail tag can point to info on drawing details, detail sheets, or the detail tool.
You can see all the tags in use at the bottom of the index page (or click here), and in the sidebar of most of the other pages. In this arrangement, more common tags are shown larger. That model tag is huge.
Tags for each post are shown at the bottom of the post.
When you click on a tag, you get a search results page of all the entries with that tag.