Much obliged, FirstBassman. I had looked in Options - Preferences -(several buttons) but not 'Arrange'. Many thanks.

Does any one at least recognise the thing with the chord entry frame ?
It's difficult to pin down because I think it is a glitch of some kind.
It typically happens when there is already a set of chords entered, and I want to revise part of the sequence manually.
I make a note of what I want to put in, select the starting point, put in (chord name), <Enter> and look up at the screen to find the box several bars away. If you don't check, it' s easy to completely randomise the harmony of an arrangement very quickly !
My impression is that when Biab gets into this mode, it actually moves a fixed number of bars each move , but not necessarily the same number each occasion the glitch appears.
It doesn't happen all the time, which means it can catch me off-guard when it does.

Sincerely

Ian G.

Late-developing enthusiast for jazz / blues. Principally pianist