A guide line is a horizontal or vertical line you can use for alignment or visual reference. Guide lines can help organize the layout of your drawing by guiding the placement of your objects. You can use guide lines as visual cues for placing objects, or you can snap objects to guide lines for more exact placement. Guide lines appear on screen but do not print.
You can add as many guide lines as you need. You also can move guide lines by dragging them to new locations on the screen with the selection pointer.
To remove a guide line, just drag and drop it onto the ruler with the selection pointer.