thanks Phil: I am trying to build a set of re-useable metric modulations - and I'm favoring the Carter-style in which the '=' is centered on the barline. I have a music function which creates the appropriate \tempo \markup (and midi tempo changes thanks to Neil Puttock) from 2 durations, and I'd like to modify it to have it centered properly on the barline. The piece I am writing is long and has many dozens of such marks so I'm hoping to avoid scooting them all around manually... thanks again michael
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