[texhax] Create directed graph in LaTeX

[John Hagerson]

The article I'm working on includes a directed graph as an illustration. The
arrows are in the middle of gentle curves, not at the ends.

Can I put arrows into the middle of a Bezier curve? Would it be better to
make the lines straight and then I can put an arrow to an imaginary middle
point and continue on to the point at the end?

Thank you for your help.

John Hagerson