With in the circle, symbols represent various celestial objects. Most of the objects shown are stars. One hundred and sixty eight stars, in 47 constellations, are available, about half are drawn at any time. In general, bright stars are larger and more complex than dimmer stars. The dimmest stars are a single dot.
Most stars are three by three with four points.
The position of all stars and other objects are located at the top left corner of the symbol. Each planet has a symbol although Pluto, Neptune and Uranus are not visible with the naked eye. Pluto's symbol is a combined PL, Neptune's a trident and Uranus has a circle under a cross with a dot in the middle. Naked eye planets have symbols that are surrounded by boxes. Saturn's is a lower case 'k' crossed like a 't'.