• Use sentence case.
  • Style brands correctly: Mapbox, OpenStreetMap, iD Editor. The only variation in capitalization is in URLs: www.mapbox.com and www.openstreetmap.org. There are no spaces between words in Mapbox or OpenStreetMap, and OpenStreetMap is never plural.
  • Write dashes using the html entity – with a space before and after – like so. For consistency, always use an en dash and not an em dash. Never use a hyphen in place of a dash.
  • Mind your serial commas. Use for clarity when necessary in complex series. Don't be these guys. When in doubt, seek a second opinion.