The Align to Grid command aligns objects to the snap grid, placing the upper-left corner of each object at its closest grid point. The Align to Grid command can be used to realign objects to the snap grid when the grid’s settings have changed. It also aligns objects to the grid if they were either created with Snap to Grid snapping turned off or were moved off the grid after they were created.
To align an object to a grid:
Select the object or objects to align.
Select Modify > Align > Align to Grid.
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