This setting allows you to define the width in pixels of a grid block in the Layout window.
WindowGridWidth = width
• width - An integer that indicates the width in pixels of a grid block in the Layout window.
You can add this setting to the Defaults file, or it will be added automatically the first time the Layout window grid dimensions are defined in the Options window. As the width dimension is subsequently changed using the Options window, the value in this setting will be updated to reflect the change.
The default width of a grid block in the Layout window is 17 pixels.