Screen grid A rectangular grid can be overlaid on the screen to assist in measuring. The grid will not effect mouse cursor interaction with other windows. The size of the grid rectangles can be adjusted by selecting the Screen Grid Spacing item from the Tools menu.
Grid icon To select the screen grid choose the Screen Grid item on the Tools menu or click on the screen grid icon on the toolbar.
See Also
Screen Grid Spacing, Measurement Tools Overview, Selecting a Measurement Tool