The Model Grids Dialog Box
Create and modify model grids by using the Model Grids dialog box. Click Layout tab and then click the arrow next to Display group. Click 
Model Grids. The Grids tabbed page contains the following options:
Model Grids. The Grids tabbed page contains the following options:• Origin—Allows you to select the coordinate system for the grid origin.
• Display—Allows control over the grid display.
◦ Show—Show the grid and grid labels by view, line, or sheet.
◦ Erase—Erase the grid and grid labels by view, line, or sheet.
◦ Show/Erase by:
▪ View—Show or erase the grid in selected views.
▪ Line—Show or erase individual grid lines.
▪ Sheet—Show or erase the grid over the entire sheet. All relevant views snap to the grid.
• Spacing—Allows you to assign the same spacing to the entire model grid or individually by axis.
◦ All—Spaces all the grid lines at the distance you define in the text box.
◦ By axis—Spaces the grid lines on any axis individually, at the distances you define in the text box.
◦ View—Applies modifications to the model grid after you display the model grid.
• Delete grid—Deletes the grid in the current view.
The Settings tabbed page contains the following options:
• Setup options—Allows you to assign various values to the following:
◦ Balloon radius— Type in the balloon radius.
◦ Offset distance—Type in the offset distance of the grid lines.
◦ Decimal places—Type in the number of decimal places.
◦ Negative prefix—Type in the symbol for the negative prefix to be displayed in balloons. The default sign is "-".
◦ Text orientation—Assign the text to be horizontal or parallel to the grid line.
◦ Text position—Assign the text to be centered, above the grid line or below the grid line.
◦ Display balloon—Allows you to display a balloon.
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◦ Show additional text—Select this check box if you want to type additional text as a prefix or suffix on any axis.