Rousseau has vertical octave lines on his newer videos, which looks quite nice and I couldn't find this option within SeeMusic (other than bar lines). Please could we have this option?
If not for aesthetic purposes, I think it would also be useful for aligning video recordings with the SeeMusic piano.
Sorry, must have overlooked it. Thanks for your help !
This feature is already available - you can find it in Keyboard Settings - Octave Guides On