SET()             Missing Documentation.

  Clipper Version  1.29 dtd 04/15/91.

  Problem Statement

  1) SET(_SET_EXTRA, <lVar> ) and SET(_SET_TYPEAHEAD, <nVar> ) are missing
     from the documentation.

  2) SET(_SET_EXTRA) always returns NIL, not it's present state.

  Cause

  Unknown.

  Work Around(s)

  SET(_SET_EXTRA) is similar to SET(_SET_ALTERNATE) and SET(_SET_TYPEAHEAD)
  is similar to SET TYPEAHEAD TO. Annotate your documentation.