Starts
            the processing of a list in the list box or in the pop-up list dialog
            box tile
         
         (start_list key [operation [index]])
 
         Subsequent calls to add_list affect the
            list started by start_list until the application
            calls end_list.
         
         Arguments
         
- key
 
            - 
               
                  A string that specifies
                     the dialog box tile. The key argument is case-sensitive.
                  
                
             - operation
 
            - 
               
                  An integer indicating
                     the type of list operation to perform. You can specify one of the following:
                  
                  1   Change selected
                     list contents
                  
                  2   Append new
                     list entry
                  
                  3   Delete old
                     list and create new list (the default)
                  
                
             - index
 
            - 
               
                  A number indicating the
                     list item to change by the subsequent add_list call.
                     The first item in the list is index 0. If not specified, index defaults to
                     0. 
                  
                  The index argument
                     is ignored if start_list is not performing
                     a change operation.
                  
                
             
         
         Return Values
         
         The name of the list
            that was started.
         
         NoteDo not use the set_tile function between start_list and end_list function calls.