EDIT - running version 6.5.1 of everything.
I hate that I'm even having to ask such a simple question, but I can't find a straight answer anywhere. Does timelion currently have the ability to add an x or y axis label? Example - if my y-values are average cost (metric=avg:cost), how can I add a vertical label stating such? Reason I ask - I recently implemented some dashboards and the timelion plots have both y-axis (left and right) being used at differing scales. The user feedback was that it was not clear which was for each. It makes sense to someone who knows the software and highlighting with your cursor etc, but this is a dashboard sitting up on a monitoring display full time, never touched or interacted with, running on auto-refresh, being looked at by people passing through who have no idea how to use it nor will touch it at all.