Illustrator: Artboard X and Y?
Artboards represent the regions that can contain printable artwork. You can resize and set the orientation for your artwork by choosing settings in the Artboard, artboard is bounded by solid lines and represents the maximum printable area.
X and Y Position Specifies the position of the artboard according to Illustratorâ€™s workspace rulers.
we can use artboards for crop areas for printing or placement purposes,it crops the document according to settings of x and y in artboard