This is another projection that attempts to be a somewhat more moderate replacement for the Mercator projection. It allows a somewhat more rapid increase in scale than the Gall projection, however, so that there is no need to stretch the projection as a whole to improve the appearance of the temperate regions. It has the following appearance:
This projection works by using the formula for the Mercator projection, and modifying it. Each latitude is treated as if it is the latitude that is only 80% as large as itself. Then the projection is stretched vertically, but only by 25%, to compensate for the factor of 80%.