Macro 1: Autorun - Works on horses, swimming, and running depending on what options you leave commented. Currently configured for horses. Uncomment jump for running, and uncomment sprint if you don't have toggle sprint.

Macro 2: Snap to cardinal/ordinal - Look roughly in the direction you want to line up with and hit the macro. Sets your camera exactly on a cardinal or ordinal and allows you to walk in that direction indefinitely without going off course. Doesn't change your pitch. Handy for long lengths of road or rail.