Set band length to current distance between banded segments

[Madde]

Add a button in the "Change Band Length" sub-menu that will change the band length to the current distance between the two banded segments (see picture).

So you could use bands
a) as a bar spacer
b) for measuring the distance between two segments

[Seth Cooper]

Assigning.

[RicGray]

Added a use current button to the "Change Length" dialog.