History of Array.prototype.filter()

useful for remembering what is a predicate.

"The array find was called upon." should be "The array filter was called upon.". This page is about filter() and not find()

Add "Return value" section as per Bug 1287421

Set a variable in the top-level example to show this does not operate on the array in place

remove minor redundancy in language

Technical review completed.

The logged result are missing some few important details