Redacted document generator?

[ffutures]

Is there a program / template / web site / whatever that will help to produce a convincing-looking redacted document? Basically, I want a couple of pages of text in the form of an official report, with most of the words (other than the, and, etc.) blanked out with a few key words which I would insert still visible.

e.g.

XXX stars are XXXXX; XXXXX XXXXXX XXX arise. Ftagnn!

I could do it easily enough in Word, I suppose, just take a document that looks about right and make all of the words black text on a black background then insert the key words, but it lacks elegance.

I should add that the players will only see a printout, not the file itself.