Grids can be entered individually or they can be generated. As grids are added to the grid system, they are listed on the tabs to the right. For orthogonal grid system, the tabs will be labeled X Grids and Y Grids. For radial grid systems, they will be labeled Radial Grids and Circular Grids.

Several commands are available to control the display and use of the grids. The Extents command is used to specify the end limits within which the grid lines will be drawn on-screen. Limits on either, neither, or both ends of the grid line may be specified. If no limit is specified for a particular end the extent will automatically be limited by the extreme grid in the opposite direction.

Grids are added to the grid system by first selecting the tab that indicates the direction of the grids. Information about the grids is then entered and the Add button is clicked. The created grid or grids will appear in the list box on the tab.

Grids may be deleted by clicking on a grid in the list box and clicking the Delete button.

Properties of the grid can be modified by first selecting the grid, making the modifications to the controls in the dialog and then clicking the Change button.