To remove the selected atoms from their current groups, choose this item.

If no atoms are selected, all will be ungrouped.

To arrange the selected atoms into a group that can be treated as a unit, choose this item.

If no atoms are selected, all will be grouped.

To flip the atoms about the origin, and to set up which axes get flipped, choose this item.

To select a specific viewing position, choose this item.

To reset all of the viewing parameters, such as the viewpoint and light position, choose this item.

To erase and then replot the current window, choose this item.

To erase the display in the current window, choose this item.

To start reading commands from the data file, choose this item.

You cannot use this menu item because there is no data file open at the current time.

To start reading commands from the data file, choose this item.

Use this menu to change the plotting parameters and to group atoms.

If you select an item from this menu, the screen will be redrawn to reflect the change.