# Some details

## The cells are two degrees by two degrees.

## Cities are shown by circular dots with their names.

## Coastlines are not indicated.

## The qibla can be read from the markings at the edge of the upper latitude.

## The distance rule is graduated according to the sine of the spherical distance.

## The meridians are parallel straight lines perpendicular to the base latitude and spaced according to the sine of the difference in longitude, modulated by the cosine of the center latitude.

## The parallels should be elliptic curves that converge at 90o. Thus a world map again looks strange, with an overlap.