Specifies the grid spacing (X and Y) for the current viewport.
| Type: | 2D-point |
| Saved in: | Drawing |
| Initial value: | 0.5000,0.5000 (imperial) or 10,10 (metric) |
To make the grid spacing default to the snap spacing, set GRIDUNIT to 0,0. Changes to GRIDUNIT are not displayed in the grid until the view is regenerated.