Sorry if this has been covered before, but I've only just installed Paint.Net [great bit of software by the way]
It would be very useful if there was the option to display the ruler units in millimeters. Also why has the cm scale been made to look like an inches scale with the displayed units in 5cm increments, and each 5cm broken down into 10ths?
For a novice like me, Paint.net is a revelation compared to Gimp, so well done to the developers
Matt