Sorcha - that was great, again! Thanks so much !
I couldn't find any PRE command in the source of your message, maybe it was stripped. You certainly know that the messages are edited before they appear here (e.g. a P command is inserted for every two consecutive CR's.)
Please also mind that the messages are displayed in Times Roman (proportional font) while we enter them in Courier (even spaced), so I'm afraid the chords won't appear where you expect them to even if the PRE command works.