+
+Hacking
+-------
+
+The movements/actions available to the player and the enemies are defined and
+can be changed in config/map_object_actions. Each line consists of, first, a
+numerical ID used internally to manage the action, secondly the number of turns
+the action takes, and thirdly a string representing the action internally.
+
+The different map object types, i.e. species (including the player's human one)
+and item types, can be edited in config/defs. Here the first value is a
+numerical ID that represents the object type, the second one describes what type
+this object decomposes to when it gets destroyed/killed, the third value is the
+character used to represent the object visually on the map, the fourth value is
+the number of hitpoints the object starts with (items are dead and start with
+zero hitpoints, anything else moves), the fifth is the string that names the
+object in the game log.