Horizontally centers the selected objects. If only one object is selected in Draw or Impress, the center of the object is aligned to the horizontal center of the page.The vertical position of the selected objects is not affected by this command.To align the individual objects in a group, choose to enter the group, select the objects, right-click, and then choose an alignment option.To align the individual objects in a group, double-click to enter the group, select the objects, right-click, and then choose an alignment option.