add steps to underground level; haven't surveyed the underground parking lot yet

Tag elements of elevated station with level=1

Map sidewalks

Map parking lot, gates to play area

Add walkway

Remove bus stop (note 4956604)

Merge house and garage buildings

Specify level=* on entrances

Change survey from addr:block to addr:unit

Specify whether there is street parking and what kind

Specify whether parking requires a fee

Specify parking access

Specify whether kerbs have tactile paving

Determine the heights of kerbs

Specify whether pitches are lit

Specify pitch surfaces

Specify road surfaces

Determine roads lane count

Specify whether crosswalks have tactile paving

Specify whether pedestrian crossings have islands