;;; -*- Mode: TDL; Coding: utf-8 -*- 


;;; Authors: 
;;; 1997-2000 Walter Kasper & Stefan Müller
;;; 2000-2002 Stefan Müller
;;; 2002-2006 Berthold Crysmann

;;; Copyright: DFKI GmbH


;; the second argument may come from the lexicon or may be a combination
;; of letters. St. Mue. 23.07.2001

letter-rule-type-1 := 
   letter-phrase &
   headed-binary-rule &
   head-comp-sem-princ &
   [ SYNSEM [ LOC.CONT [  RELS #liszt,
		          HCONS #hcons ],
              lex -
            ],
     HEAD-DTR #head,
     ARGS < #head & lexical-sign &
             [ SYNSEM letter-synsem & [
                      LOC.CONT [ KEY [ LETTERS [ LAST #li2 ] ],
                                 RELS #liszt,
                                 HCONS #hcons ],
                      lex +
                      ],
	       key-arg + ],
             [ SYNSEM letter-synsem & [
                      LOC.CONT [ KEY [ LETTERS [ LIST #li2 ] ] ],
                      lex -
                      ] 
             ] >
    ].

#|
letter-rule-type-2 :=
  letter-phrase &
  headed-unary-rule &
  head-sem-princ &
  [ ARGS < #head & lexical-sign & [ 
           synsem letter-synsem ] >,
    HEAD-DTR #head ].
|#