precisely set the angle for the hatched fillling
I'd like to have an area with a hatching at precisely 60°, so that the lines are parallel to a pre-existing line. The slider in the style panel allows to adjust the angle, but it is difficult to do so in a precise way.
Is there another way, e.g. via a command-line in the input field?
I found the SetDecoration command, but it seems to me that it only allows to specify the pattern, but not the parameters for it.
Thanks a lot for your help