Comment 5 for bug 220711

What do you want me to confirm?

yes, "1px" is invalid.

The properties can be looked up on MSDN by going to the System.Windows.Shapes.Path class, and its parent class System.Windows.Shapes.Shape class.

There you can find all of the properties that are exposed, for example:

http://msdn.microsoft.com/en-us/library/system.windows.shapes.shape.strokethickness(VS.95).aspx