Is the API Documentation in a search collection?

I recently came across the API documentation collection at Building On The Eloqua Platform - A Resource Guide

(thank you, Eli Snyder) and was wandering if those files are collected in a search index or knowledgebase?

If would be handy to be able to search the entire corpus of API docs for what you need. (Perhaps it exists and I just haven't found it??)

Thanks again!

-- Charlie