Leading Amount Box  
    Leading is the amount of space between lines of text. The leading 
 amount box allows you to change the leading of lines in a paragraph. 
 It includes a text box and a set of arrows to the right of the text box 
 that allows you to increase or decrease the leading of the selected text.
 Each click on the down arrow decreases the leading by 1pixel ( appr. 
 1/72 of the inch).  Each click on the up arrow increases the leading by 
 the same value. You may also set the leading value to auto . 
 Alternatively, you may enter the value  for the leading amount directly 
 into the text box  and press enter, return, or tab.
    Further information can be found in the Character Spacing help 
 section.