new tutorial example

doc/tutorial/old/Fish.gf

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+abstract Fish = {
+    cat Fish ;
+    fun Salmon, Perch : Fish ;
+}

doc/tutorial/old/FishEng.gf

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+concrete FishEng of Fish = {
+  lin
+    Salmon = {s = "salmon"} ;
+    Perch  = {s = "perch"} ;
+}

doc/tutorial/old/Gatherer.gf

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+abstract Gatherer = Paleolithic, Fish, Mushrooms ** {
+    fun 
+      FishCN     : Fish     -> CN ;
+      MushroomCN : Mushroom -> CN ;
+}

doc/tutorial/old/GathererEng.gf

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+concrete GathererEng of Gatherer = PaleolithicEng, FishEng, MushroomsEng ** {
+  lin
+    UseFish x = x ;
+    UseMushroom x = x ;
+}

doc/tutorial/old/Mushrooms.gf

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+abstract Mushrooms = {
+    cat Mushroom ;
+    fun Cep, Agaric : Mushroom ;
+}

doc/tutorial/old/MushroomsEng.gf

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+concrete MushroomsEng of Mushrooms = {
+  lin
+    Cep    = {s = "cep"} ;
+    Agaric = {s = "agaric"} ;
+}

doc/tutorial/old/Neolithic.gf

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+abstract Neolithic = Paleolithic ** {
+  fun
+    Fire, Wheel : CN ;
+    Think : V ;
+}

doc/tutorial/old/NeolithicEng.gf

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+concrete NeolithicEng of Neolithic = PaleolithicEng ** {
+  lin
+    Fire  = {s = "fire"} ;
+    Wheel = {s = "wheel"} ;
+    Think = {s = "thinks"} ;
+}

doc/tutorial/old/Paleolithic.gf

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+abstract Paleolithic = {
+cat 
+  S ; NP ; VP ; CN ; A ; V ; TV ; 
+
+fun
+  PredVP  : NP -> VP -> S ;
+  UseV    : V -> VP ;
+  ComplTV : TV -> NP -> VP ;
+  UseA    : A -> VP ;
+  ModA    : A -> CN -> CN ;
+  This, That, Def, Indef : CN -> NP ; 
+  Boy, Louse, Snake, Worm : CN ;
+  Green, Rotten, Thick, Warm : A ;
+  Laugh, Sleep, Swim : V ;
+  Eat, Kill, Wash : TV ;
+}

doc/tutorial/old/PaleolithicEng.gf

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+concrete PaleolithicEng of Paleolithic = {
+lincat 
+  S, NP, VP, CN, A, V, TV = {s : Str} ; 
+lin
+  PredVP np vp  = {s = np.s ++ vp.s} ;
+  UseV   v      = v ;
+  ComplTV tv np = {s = tv.s ++ np.s} ;
+  UseA   a   = {s = "is" ++ a.s} ;
+  This  cn   = {s = "this" ++ cn.s} ; 
+  That  cn   = {s = "that" ++ cn.s} ; 
+  Def   cn   = {s = "the" ++ cn.s} ;
+  Indef cn   = {s = "a" ++ cn.s} ; 
+  ModA  a cn = {s = a.s ++ cn.s} ;
+  Boy    = {s = "boy"} ;
+  Louse  = {s = "louse"} ;
+  Snake  = {s = "snake"} ;
+  Worm   = {s = "worm"} ;
+  Green  = {s = "green"} ;
+  Rotten = {s = "rotten"} ;
+  Thick  = {s = "thick"} ;
+  Warm   = {s = "warm"} ;
+  Laugh  = {s = "laughs"} ;
+  Sleep  = {s = "sleeps"} ;
+  Swim   = {s = "swims"} ;
+  Eat    = {s = "eats"} ;
+  Kill   = {s = "kills"} ; 
+  Wash   = {s = "washes"} ;
+}

doc/tutorial/old/PaleolithicIta.gf

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+concrete PaleolithicIta of Paleolithic = {
+lincat 
+  S, NP, VP, CN, A, V, TV = {s : Str} ; 
+lin
+  PredVP np vp  = {s = np.s ++ vp.s} ;
+  UseV   v      = v ;
+  ComplTV tv np = {s = tv.s ++ np.s} ;
+  UseA   a   = {s = "è" ++ a.s} ;
+  This  cn   = {s = "questo" ++ cn.s} ; 
+  That  cn   = {s = "quello" ++ cn.s} ; 
+  Def   cn   = {s = "il" ++ cn.s} ;
+  Indef cn   = {s = "un" ++ cn.s} ; 
+  ModA  a cn = {s = cn.s ++ a.s} ;
+  Boy    = {s = "ragazzo"} ;
+  Louse  = {s = "pidocchio"} ;
+  Snake  = {s = "serpente"} ;
+  Worm   = {s = "verme"} ;
+  Green  = {s = "verde"} ;
+  Rotten = {s = "marcio"} ;
+  Thick  = {s = "grosso"} ;
+  Warm   = {s = "caldo"} ;
+  Laugh  = {s = "ride"} ;
+  Sleep  = {s = "dorme"} ;
+  Swim   = {s = "nuota"} ;
+  Eat    = {s = "mangia"} ;
+  Kill   = {s = "uccide"} ; 
+  Wash   = {s = "lava"} ;
+}

doc/tutorial/old/paleolithic.cf

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+PredVP.  S   ::= NP VP ;
+UseV.    VP  ::= V ;
+ComplTV. VP  ::= TV NP ;
+UseA.    VP  ::= "is" A ;
+This.    NP  ::= "this" CN ; 
+That.    NP  ::= "that" CN ; 
+Def.     NP  ::= "the" CN ;
+Indef.   NP  ::= "a" CN ; 
+ModA.    CN  ::= A CN ;
+Boy.     CN  ::= "boy" ;
+Louse.   CN  ::= "louse" ;
+Snake.   CN  ::= "snake" ;
+Worm.    CN  ::= "worm" ;
+Green.   A   ::= "green" ;
+Rotten.  A   ::= "rotten" ;
+Thick.   A   ::= "thick" ;
+Warm.    A   ::= "warm" ;
+Laugh.   V   ::= "laughs" ;
+Sleep.   V   ::= "sleeps" ;
+Swim.    V   ::= "swims" ;
+Eat.     TV  ::= "eats" ;
+Kill.    TV  ::= "kills" 
+Wash.    TV  ::= "washes" ;

doc/tutorial/old/paleolithic.ebnf

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+S   ::= NP VP ;
+VP  ::= V | TV NP | "is" A ;
+NP  ::= ("this" | "that" | "the" | "a") CN ;
+CN  ::= A CN ;
+CN  ::= "boy" | "louse" | "snake" | "worm" ;
+A   ::= "green" | "rotten" | "thick" | "warm" ;
+V   ::= "laughs" | "sleeps" | "swims" ;
+TV  ::= "eats" | "kills" | "washes" ;