The pages
Open a page you're searching, select all its text, copy it, and paste it here. Add as many pages as you like. Nothing you paste leaves this page; it's only kept in this browser.
Words to seek
Throw words at the pages: the ones you think the fact is near, and their synonyms. Separate them with commas or new lines. A phrase in quotes is matched as a whole.
The Index only searches what you paste. It can't tell you whether you've found an answer; it can only show you where your words lead. There may be some unusual features that occur at times as you use this tool.
What stirs
Passages ranked by how many of your words they hold. Numbers are marked, since a fact is often a number.
Every number in the pages
Every number the pages contain, written as digits or as words (“a thousand”), with the sentence it sits in. Useful when you know the fact is a number but not where it hides.