This setting allows you to define the height in pixels of a grid block in the Layout window.
WindowGridHeight = height
• height - An integer that indicates the height 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 height dimension is subsequently changed using the Options window, the value in this setting will be updated to reflect the change.
The default height of a grid block in the Layout window is 17 pixels.