contents of new tutorial

doc/tutorial-next/FoodIta.gf

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+concrete FoodIta of Food = {
+
+  lincat
+    S, Item, Kind, Quality = {s : Str} ;
+
+  lin
+    Is item quality = {s = item.s ++ "è" ++ quality.s} ;
+    This kind = {s = "questo" ++ kind.s} ;
+    That kind = {s = "quello" ++ kind.s} ;
+    QKind quality kind = {s = kind.s ++ quality.s} ;
+    Wine = {s = "vino"} ;
+    Cheese = {s = "formaggio"} ;
+    Fish = {s = "pesce"} ;
+    Very quality = {s = "molto" ++ quality.s} ;
+    Fresh = {s = "fresco"} ;
+    Warm = {s = "caldo"} ;
+    Italian = {s = "italiano"} ;
+    Expensive = {s = "caro"} ;
+    Delicious = {s = "delizioso"} ;
+    Boring = {s = "noioso"} ;
+
+}