Hi Dapper, as Jono says, that's it exactly - in my defence, I've only come across that clue device about eight million times so, you know ... 😂
Hi Jono, your post prompted me to Google the date of the theme and, you're right - a great touch from Paul. It also prompted me to listen to the similar Al Stewart classic which was one of the first tunes I learnt on the guitar:-)
Hi Rocky, yes, Google confirms that FA is the first time it appeared - it's funny how some terms and lines get traction, so to speak - Arnie's "I'll be back" springs to mind:-)