Horizontal (X) Position Box  
   The Horizontal Position Box consists of a text box that allows 
you to change the horizontal position of an active object. 
     When any item except for a line  is active, the  box value is  the 
 horizontal coordinate of the item frame origin, which is located in the 
 left top corner of the unrotated object.
    When the line is active, the  box value represents the horizontal
 coordinate of the start point of the line. (the start and end points are
 defined at the moment of a line creation ).
    To change the horizontal coordinate of an item:  Click on the 
 Horizontal Position Box. When the text insertion point appears 
 enter the desired value in it, then pren or Enter.  
    The measurement  units are those specified through the
 Ruler Settings menu entry (Edit Menu) or directly by clicking on
 the lines intersection in the left top corner of the document window
 while the Option key is pressed down. When rulers have different
 settings, the units for display in the  Horizontal Position Box 
 are Inches.
    With the Zoom Tool selected, the value in the box represents the 
 horizontal coordinate of the center of the Zoom area.