You are viewing outdated docs OpenLayers 2.x is not under active development any more. Go to http://openlayers.org/en/latest/doc/ to view the latest OpenLayers 3.x docs. Spherical Mercator¶ This document describes the Spherical Mercator projection, what it is, and when you should use it. It includes some background information, demonstration of using the code with just a commercial layer, and how