There is a tall, skinny "flag" on the score, at the beginning.

It looks like one of those golf flags to mark where the holes are. I somehow turned it on. Whenever I play the score, if I stop and then click on a note somewhere in the body of the score, to get the music to start up at that new spot, it jumps back to the beginning instead, presumably going to that flag. I don't know what to call it, so I can't think of how to look it up in the handbook, as I doubt "golf flags" are listed. What did I do to acquire the flag and how can I get rid of it?