[Idea] Reverse lookup of class names

[davestewart]

I get the idea behind semantic, that is, build up class names to determine behaviour, but it's often difficult as a new user to know:

• what is available
• which combinations to use

I'd love to see some kind of reverse-lookup mechanism, where you could:

• type them in and see the list of elements filter
• have a list of tags to choose from, perhaps with some other metadata like "occurrence"

Might be a side project for me at some point, I guess the real challenge would be collating the data in the first place.

Happy to take some starter ideas for 10!