Hello grammars in tutorial

doc/tutorial/Food.gf

@@ -1,10 +1,12 @@
 abstract Food = {
 
   cat
-    S ; Item ; Kind ; Quality ;
+    Phrase ; Item ; Kind ; Quality ;
+
+  flags startcat = Phrase ;
 
   fun
-    Is : Item -> Quality -> S ;
+    Is : Item -> Quality -> Phrase ;
     This, That : Kind -> Item ;
     QKind : Quality -> Kind -> Kind ;
     Wine, Cheese, Fish : Kind ;

doc/tutorial/FoodEng.gf

@@ -1,7 +1,7 @@
 concrete FoodEng of Food = {
 
   lincat
-    S, Item, Kind, Quality = {s : Str} ;
+    Phrase, Item, Kind, Quality = {s : Str} ;
 
   lin
     Is item quality = {s = item.s ++ "is" ++ quality.s} ;

doc/tutorial/FoodIta.gf

@@ -1,7 +1,7 @@
 concrete FoodIta of Food = {
 
   lincat
-    S, Item, Kind, Quality = {s : Str} ;
+    Phrase, Item, Kind, Quality = {s : Str} ;
 
   lin
     Is item quality = {s = item.s ++ "è" ++ quality.s} ;

doc/tutorial/Hello.gf

@@ -0,0 +1,10 @@
+abstract Hello = {
+
+  cat Greeting ; Recipient ;
+
+  flags startcat = Greeting ;
+
+  fun 
+    Hello : Recipient -> Greeting ;
+    World, Mum, Friends : Recipient ;
+}

doc/tutorial/HelloEng.gf

@@ -0,0 +1,10 @@
+concrete HelloEng of Hello = {
+
+  lincat Greeting, Recipient = {s : Str} ;
+
+  lin 
+    Hello rec = {s = "hello" ++ rec.s} ;
+    World = {s = "world"} ;
+    Mum = {s = "mum"} ;
+    Friends = {s = "friends"} ;
+}

doc/tutorial/HelloFin.gf

@@ -0,0 +1,10 @@
+concrete HelloFin of Hello = {
+
+  lincat Greeting, Recipient = {s : Str} ;
+
+  lin 
+    Hello rec = {s = "terve" ++ rec.s} ;
+    World = {s = "maailma"} ;
+    Mum = {s = "äiti"} ;
+    Friends = {s = "ystävät"} ;
+}

doc/tutorial/HelloIta.gf

@@ -0,0 +1,10 @@
+concrete HelloIta of Hello = {
+
+  lincat Greeting, Recipient = {s : Str} ;
+
+  lin 
+    Hello rec = {s = "ciao" ++ rec.s} ;
+    World = {s = "mondo"} ;
+    Mum = {s = "mamma"} ;
+    Friends = {s = "amici"} ;
+}