Comment 2 for bug 169658

Jan, I committed the part of your patch with DistanceIn/Out
markers. As for your new arrows, they use white screen
rectangles to hide the blunt tip of the stroke. These
rectangles will only work on white background, and in
general are too hackish and may give a lot of unexpected
surprises to the user. For this reason, I don't think we
want to provide this kind of arrows in the main set. If you
want, you can make a collection of different-sized and
different-shaped arrows with such white screens and we'll
enclose it as an alternative.

However I moved all of our standard arrows as far as
possible back on the path, so that their tips do not
protrude farther than necessary to cover the end of the
stroke. So, now the arrow tips still do not coincide with
end nodes, but are much closer to them than before.