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+Dialogue system grammars using GF resource.
+
+AR 16/5/2006
+
+==Functionality and purpose==
+
+Dialogue system abstract syntax + concrete syntaxes for
+different languages. One of them is Prolog (with some resemblance to
+dialogue moves in GoDiS).
+
+The purpose is to show how new systems can be built for new domains just
+by specifying just two things:
+- a domain ontology in abstract syntax
+- a domain terminologies in concrete syntaxes
+
+
+This is based on two library elements
+- base dialogue grammars
+- resource grammar libraries
+
+
+In general, the only kind of elements that need to be added are
+constants (0-place fun's) of the following categories from Dialogue.gf.
+```
+  Kind ;             -- e.g. Room
+  Object Kind ;      -- e.g. Kitchen
+  Oper0 ;            -- e.g. Stop
+  Oper1 Kind ;       -- e.g. Play
+  Oper2 Kind Kind ;  -- e.g. Add
+  Move ;             -- e.g. MorningMode
+```
+
+
+==Files in this directory==
+
+Files (for X = Eng, Fin, Fre, Prolog, Swe):
+
+Files provided as library to build on:
+```
+  Dialogue.gf   -- base dialogue grammar
+  DialogueX.gf  -- implementation instance
+  DialogueI.gf  -- implementation functor
+
+  ResProlog.gf  -- help constructs for Prolog terms
+
+  Weekday.gf    -- untility grammar with weekdays
+  WeekdayX.gf
+
+  AuxDialogue.gf-- interface of auxiliary resource-defined opers
+  AuxX.gf       -- instances for different languages
+```
+Files implementing two examples.
+```
+  Agenda.gf     -- application grammar for agenda
+  AgendaX.gf
+
+  Lights.gf     -- application grammar for lights
+  Lights.gf
+```
+
+==Files needed to build a new application==
+
+To build a new application for domain Dom, you thus need
+```
+  Dom.gf        -- introduce fun's in Kind, Object, Oper0, Oper1, Oper2
+  DomX.gf       -- concrete syntax of the new fun's for language X
+```
+
+==Some tests==
+
+You first need to do, with the latest resource grammar version,
+- ``make present`` in ``lib/resource-1.0``
+
+To test an application in GF, do e.g.
+- ``make lights`` to make a package with all the Lights grammars
+- ``make engcorpus`` to generate an English corpus
+- ``make swecorpus`` to generate a Swedish corpus
+
+
+
+Here are some other commands:
+- ``i LightsEng.gf`` in current dir, to load a grammar 
+- ``gr | l -all`` to random-generate
+- ``gt -depth=4 | pt -transform=typecheck | l -all`` to generate a corpus
+- ``p "switch off all lights in the kitchen"`` to parse
+- ``i LightsProlog.gf`` to load the Prolog version
+- ``pg -printer=gsl -startcat=Move`` to print a Nuance grammar
+- ``p -lang=LightsEng "switch off all lights" | pt -transform=solve | l -lang=LightsProlog`` 
+to translate from English to Prolog
+- ``si -tr -lang=LightsEng | p -cat=Move -lang=LightsEng | pt -transform=solve | l -lang=LightsProlog``
+to translate English speech into Prolog
+
+
+The last one is the coolest - but you may need to enable the ``speech_input`` command by installing ATK
+and recompiling GF.
+