Partial completion of ode.py docstrings. Search ALEXTODO comments for the boundaries of remaining work.
Don't use :math: (just use backticks).
Finish docstrings from previous commit.
Fix typo, "that that" -> "that the".
Another instance of adding a space (\\,) prior to a dx.
Expose documentation of the "allhints" list.
Re-indent ode.py docstrings after previous commit.
Format "allhints" documentation.
Don't use double quotes if using backticks.
Don't use mathrm for differentials.
Use e^x instead of exp.
Re-indent ode.py with tw=78.
Use f'(x) instead of \frac{df(x)}{dx}.
Fix partial derivative notation.
Use raw docstring for module (fixes "nth" escaping).
Typo
Don't use square brackets in math (except matrices, etc.).
All general forms as displaymath.
Re-work allhints docstring for exposure in API docs.
Merge pull request #2142 from alhirzel/ode-py-docs

ode.py docstrings (Google Issue 3685)