Last night's scribbles:
Last night's scribbles:

- Revise abstract based on Guido's comments from way back.
- Point out that LaTeX is a structured system & we're using it that
  way.
- Add a small section on marking up code examples.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator