GetListString:

-------------------------------------------------------------------------------
   Get an element from a list uicontrol. Returns empty if there is no string
   or the value of the uicontrol is 0.
-------------------------------------------------------------------------------
   Form:
   s = GetListString( h )
-------------------------------------------------------------------------------

   ------
   Inputs
   ------
   h	       (1,1) Handle to the string

   -------
   Outputs
   -------
   s        (1,:) String

-------------------------------------------------------------------------------

Children:

Common: General/DeBlankLT