3ds Max Keyboard Shortcuts
"Ctrl + G"
The grid, also called User Grid or Custom Grid, is a 2D parametric object with adjustments for overall size and grid spacing. It allows you to move and orient user grids anywhere in world space.
You can assign a keyboard shortcut to Activate Home Grid in the Keyboard panel of the Customize User Interface dialog. This is useful if you need to move back and forth between different grids.