The Grids window is one of the eight windows which you can select in the attribute window.

The Grids window shows the background grids available for the current file. You can also tear off the window, move it anywhere in the working area and change its size. Clicking the Close button closes the Grids window. Clicking on the arrow in the top right-hand corner opens a pop-up menu containing further commands for editing grids. The two standard grids, Isometric and Plane view—and all the grids you have defined yourself—are displayed in the Grids window. The current grid is indicated by a highlighted background. If you have selected the check box Show grid in the preferences (see Preferences), the current grid is shown in the background of the drawing area. If you wish to use another grid, you can do this by clicking the name of the grid you require. The display changes and all the elements which are drawn afterwards are aligned to the new grid. Existing elements are not affected by changing grids.

Double-clicking on the name of a grid opens the Edit grid dialog box. This window contains the settings for the current grid. You can either change the settings or create a new grid. In doing this, the grid you have selected also becomes the current grid. You can also select the dialog box using the Edit grid command in the pop-up menu. Grid editing instructions are provided in the next section.