Tips for editing with VI

        * The command :l (colon and a lowercase L) will show the current line
          with any hidden characters identified.  Below is the command acted
          on the first line of this indented paragraph.  You can see the tab
          at the begginning of the line and the extra space at the end.  Both
          have to be removed in order for the programs to process propperly. 
          
^I* The command :l (colon and a lowercase L) will show the current line $
 
        * That same command follow by a number (:l50) will do the same for 
          that number of lines, which just makes it easier to clean up a long
          cache list.