Is there any way to apply tracking to multiple glyphs (i.e. apply same increment of sidebearings)? Transformation filter only sets absolute value and mekkablue’s script applies the change only by percentage. If there isn’t any, I think the transformation panel should have an pulldown-menu option to allow absolute or relative sidebearings.

There’s a checkbox in the Transformation filter to make the values Relative, no?

Ah, yes. My bad.