a mail message. And now suppose you've done some kind of full-text search
on that text for a bunch of keywords, and you want to display the context
in which you found the keywords inside the body of the text.
A simple-minded way to do that would be just to get the two words either
side of each keyword. But hey, don't be too simple minded, because you've
got to make sure that the list doesn't overlap. If you have
the quick brown fox jumped over the lazy dog
and you extract two words either side of ``fox'', ``jumped'' and ``dog'',
you really don't want to end up with
quick brown fox jumped over brown fox jumped over the the lazy dog
so you need a small amount of smarts. This module has a small amount of smarts.