-A line of "OBJECT" followed by a number starts it, and the number sets the
-object type's internal id. The number after "CONSUMABLE" defines the object
-as consumable (and to so many hitpoints gain). The character after "SYMBOL" is
-the one shown on the map to represent to object type. "LIFEPOINTS" is the start
-hitpoints value for this object type and defines it as animate if it is
-non-zero. The string after "NAME" sets the object type's name. "CORPSE_ID" sets
-the id of the object type that objects of this type degrade to if their
-hitpoints drop to zero if they start out as inanimate (what is not implemented
-yet: or if they are inanimate, but are otherwise crushed). Note that the
-"CORPSE_ID" must match the id of an object type defined in the file (before or
-after, it may even be the same). "START_NUMBER" sets the number of objects that
-are to appear of the given type on the map on game start.
+A line of "THINGTYPE" followed by a number starts it, and the number sets the
+thing type's internal id. The number after "CONSUMABLE" defines the thing as
+consumable (and to so many hitpoints gain). The character after "SYMBOL" is the
+one shown on the map to represent to thing type. "LIFEPOINTS" is the start
+hitpoints value for this thing type and defines it as animate if it is non-zero.
+The string after "NAME" sets the thing type's name. "CORPSE_ID" sets the id of
+the thing type that things of this type degrade to if their hitpoints drop to
+zero if they start out as inanimate (what is not implemented yet: or if they are
+inanimate, but are otherwise crushed). Note that the "CORPSE_ID" must match the
+id of a thing type defined in the file (before or after, it may even be the
+same). "START_NUMBER" sets the number of things that are to appear of the
+given type on the map on game start.