Thread:Manual:JS/API/UI Extension Developer Library/Intro?

I think this needs a small introductory text, perhaps defining the scope, target audience, etc. Right now it feels like merely a collection of related resources and doesn't make it clear what goal it aims to assist (maybe a few examples would help).

For instance, MAH called it "documentation for gadget authors" in the message he left me on my user page; that's a good start, I believe, but I guess it might be useful for other audiences and purposes as well.