It is often the case that a collection of objects should line-up uniformly. The commands of the Edit / Move menu offer six possible ways to do this.

The command Align Horizontally to Left (and Align Horizontally to Right) moves all of the selected objects so that their left edge (or right edge) is moved to the leftmost (or rightmost) edge of those objects. The command Align Horizontally to Center moves all of the selected objects so that their X center is at the location of the X center coordinate of those objects.

The command Align Vertically to Top (and Align Vertically to Bottom) moves all of the selected objects so that their top edge (or bottom edge) is moved to the topmost (or bottommost) edge of those objects. The command Align Vertically to Center moves all of the selected objects so that their Y center is at the location of the Y center coordinate of those objects.