Anchal Arora, Sr Software Engineer for FM, has posted a utility along with the source code to highlight all occurences of a word in a FM document (works only in FM11). I've asked for an Extendscript version of this. If anybody else thinks this would be a good learning example for Extendscripts, please add a comment to the posting.
Note: The utility link is buried in the Technical Details section of the post as "attached here".