freeWAIS-sf Query Syntax

How can you make a search query ?
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QUERY SYNTAX:
------------
      query        -> expression
      expression   -> term
                      expression OR term
                      expression term                 # OR may be ommited
      term         -> factor
                      term AND factor
                      term NOT factor                 # NOT really means
                                                      # AND NOT
      factor       -> word
                      (  expression )
                      field   =  ( s_expression )
                      field   =  word
                      field   = phonix|soundex word  # phonix or soundex search
                      field   == word                 # for numeric fields
                      field   <  word
                      field   >  word

      # same as above, but no field spec is allowed, since one is
      # given already
      s_expression   -> s_term
                        s_expression OR s_term
                        s_expression s_term
      s_term         -> s_factor
                        s_term AND s_factor
                        s_term NOT s_factor
      s_factor       -> WORD
                        ( s_expression )

QUERY EXAMPLES:
----------------
      factorization regression                # free text queries
      factorization OR regression             # same as above
      factorization AND regression            # both words present
      title=(factorization regression)        # one of them in the title field
      title=(factorization AND regression)    # both of them in the title field
      for=(regression NOT factorization)      # "regression" in for field
                                              # and "factorization" not in
                                              # for field
      'singular value decomposition'          # literal search
      eigen*                                  # partial searches
      gams=d4c*