[Observium] Axis labeling for graphs

Hi...

Maybe this is a novice question. I do have observium set up for a few days now and works quite well. Thanks to all involved. But there is one thing I do miss.

Is it possible to label the axis for graphs?

eg. the Diskusage graph. The x axis is the timeline (which is easy to detect) but the y axis is percentage of usage. But it would be way clearer if you would add label to the x and y axis to clearly know in which unit is measured here. Especially when you hop between graphs.

Thanks for this good product,

Roland Schwingel