menu File -> Page Setup -> Layout and Routing tab
and set the Line Jumps to None.
Thank you, Paul! My diagram is much improved. Very much improved.
The bumps are useful in schematics where the lines could join with
other lines. The bumps convey the fact that an intersection does not
represent a join. However, it is way too busy for dense diagrams.
The Bumps also work better when the lines are rectinlinear, and an
algorithm/heuristic automatically spaces lines and corners apart. In
a free-for-all, with straight center-to-center lines, there can be
some really messy parts with many intersections at many angles. The
bumps just cause confusion. They are also unnecessary when it is
already understood that no intersections represent logical joining of
lines.
Even in the case where bumps serve a useful purpose, a much cleaner
way to distinguish between intersections where lines logically join
versus those where they don't is to put a big dot where they join. A
"solder" dot, in the paradigm of electrical engineers. This is much
more in vogue these days (and has been for a while). Bumps are from
way back, before the better practice of dots came about. The only
problem is, inexperienced diagrammers don't often know about using
dots to distinguish between joining and nonjoining intersections.
This occurs in diagrams in the most technical of journals. Some leave
it up to context to determine whether intersections join i.e. the
reader has to guess.
Hmmm, wonder if Visio might provide the solder dot feature....