To have MacAtoms alert you when it is done plotting, choose this item. Currently MacAtoms will stay quiet. To have MacAtoms be quiet when it is done plotting, choose this item. Currently MacAtoms will alert you by sounding an alarm. To stop MacAtoms from plotting over the menu bar, choose this item. To have MacAtoms plot over the menu bar, choose this item. Use this if you are making video recordings and don't want the menu bar to be seen. To select a different model for how light is reflected from the atoms, choose this item. To select a different dithering method for making realistic shading, choose this item. To use different patterns to represent different atoms, choose this item. Currently atoms are displayed with realistic shading. To display atoms with realistic shading, choose this item. Currently, atoms of different types are represented by different patterns. Use this menu to set options that determine how the program runs.