1.5.1 lines too long

[Rune Zedeler]

It is a good idea to do all lines in postscript - this is probably what
it takes to get rid of all the rounding errors.
But, for now it does not work. All lines are a bit too long. - Score
lines extends to the right of rightmost bar-line, and stems are also too
long. Especialle leftmost stem on a knee is far too long.
Perhaps this has something to do with the ps-points being 1/72 inch
rather than 1/72.27 inch, but I don't think so since I think that the
errors are bigger than that.

Why extend stem to top of beam instead of center as you did before?
If beam gets correct size then stem to center of beam would be easier.

-Rune