Noticed Maxar satellite imagery now shows the Upstate Center for Advanced Manufacturing Excellence at PTC, so I traced the building and some of the service roads with greater precision based on that imagery.

Fixed location, updated name and some details for G. Frank Russell Technology Center.

Fixed some misplaced features along Northside Drive.

Of course I missed a crossing tag in my previous gargantuan changeset. Also added a crosswalk at Cokesbury Road and SC-72 Bypass I had forgotten about based on the Maxar satellite imagery.

Mapped sidewlaks as separate ways along SC-72 Bypass through Greenwood. Added most crosswalks. Need to clarify some crossing controls. Will eventually want to add kerb features, but for this length that may be quite a project.

Fixed boundaries of Grace Street Park. Please don't connect things like park boundaries to adjacent streets...

Moved misplaced AutoZone store.

Added crosswalks at entrance to Jeff May Complex.

Fixed a few minor issues with Lidl building in Greenwood.

Slightly refined shape of Our Lady of Lourdes Catholic Church.

Missed one of Emerald High School's service roads.

Added Emerald High School boundaries, traced school building, added athletic field, traced service roads and parking lots around the school.

Added path connecting Hampton Avenue sidewalk to apartment building parking lot.

Added / clarified some pedestrian crossings on Cambridge Avenue at Main / Montague and Grace Street.

Added some refinements to Cambridge Gateway Trail and crosswalks near both ends.

Added entrance loop and parking aisle for West Cambridge Park off Grove Street.

Added separate sidewalk on minor / frontage road off Main Street South.

Mapped sidewalks on South Main Street / US-25 south as far as Blyth Road.

Mapped divided entrance to Mathews Mill Village at Columbia Avenue, and monument in the middle of it.

Added sidewalk tags to some streets on the south side of Greenwood and slightly repositioned some nearby POIs, based on gps trace and notes from in-person survey.