Make note about manual field annotation.
Make code background != warning background.
.dot graphs should have a transparent background.
Set a sensible DPI for raster output.
Put install(tesla.css) near configure(tesla.css).
Describe strict, conditional modes.
Off-by-one error: example taken from wrong line.

This example was supposed to be taken from example.c:52, not example.c:53.
Use better strict vs conditional example images.
Explicitly state that this is an NFA.