From Lisa Dusseault:
Section 4.4.1. The term "Q-node" appears in a diagram. I thought for
quite a while this actually read "Q-mode" then for a while I thought
it was an overlooked typo. Very confusing visually. If you can't
think of a better term, at least add another line to the boxes at the
top:
+----------+ +----------+
| Q-node: | | R-node: |
| Querying | |Responding|
| Node | | Node |
+----------+ +----------+
|