sf_cua_pick_list    This function works identical to PICK_LIST()
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    function uint sf_cua_pick_list prototype
      parameters value long plist,;
                 value int lr,;
                 value int lc,;
                 value int rr,;
                 value int rc,;
                 const logical disp_only,;
                 const logical ret,;
                 value int window_color,;
                 const char header_string,;
                 value int  header_color,;
                 value int beginning_element,;
                 const logical use_handler,;
                 untyped exception_handler

     This function works identical to PICK_LIST().  The window_color,
     header_string and header_color operate like SF_CUA_OVER_WINDOW().
     Disp_only set to .t. will return without waiting for a selection and
     return_on_key set to .t. will return on any exception key...just like
     Pick_list().

     Unlike PICK_LIST(), this function returns the selected element instead
     of requiring the passing of a return variable.  Also, beginning_element
     allows you to specify the initial pick_str() displayed.

     Updates:
            1. Programmer may pass .t. to use_handler and the
               exception_handler procedure of their choice.