I know this is about Title Pages, but in the script for THE SITTER -- which I found hysterical, haven't seen the movie yet -- 2 quotes show up : "It's 10:00 PM. Do you know where your children are?" -- Public Service Announcement & "Never raise your hands to your kids. It leaves your groin unprotected." -- Red Buttons On the second page, but these sum up the Theme of the script. ALSO Swetnam's EVIDENCE, the song lyric by Elton John -- "There's no distance put between us. Safe enough for you to hide. I'm watching all of your secrets. The camera never lies." Also, summing up the Theme. So I think that if it's Theme-related, why not? But it probably looks more professional to put it on it's OWN page. Just my 3 cents! :)

If you want to let the reader know that the screenplay is based on a true story, then perhaps it helps to put the logline on the title page? Many movies based on true stories just wouldn't work if they weren't true. "King's Speech" for example. If Bertie wasn't a real king, preparing his country for a real war (coincidently against one of the greatest orators the world has ever known), then I don't think that movie would have had the emotional impact it did. We, the cynical audience, just wouldn't have bought the concept of a king with a speech impediment. So if it is critical to let the reader know that it is a true story, perhaps the logline on the title page could do that. Or perhaps there is a better way?

Thanks! I love that (500) Days opening.

I can't think of many scenarios in which, if your script is being read at all, the logline is not already known / has been assessed... Realistically, no one is going to invest the reading time until he/she has been 'grabbed' by the logline already. All the best with your writing.