When selecting a line shape, right-click, properties, you get a dialog with editable fields (lenght, width, start and end coordinates). It seems to me very weird that those fields are NOT editable, although one can click them, and even select the numbers. It would be a very nice way to fine tune graphical objects... but it ain't working.
Yup, but the fact that those fields (start and end coordinates) appear as editable is misleading in some way, and it still would be nice to be able to use those to actually modify objects.