diff --git a/sys/unit.h b/sys/unit.h
new file mode 100644
index 0000000..27a8a2c
--- /dev/null
+++ b/sys/unit.h
@@ -0,0 +1,86 @@
+// MorgenGrauen MUDlib
+//
+// unit.h -- Defines fuer Units
+//
+// $Id: unit.h 9017 2015-01-10 19:20:14Z Zesstra $
+
+#ifndef _UNIT_H_
+#define _UNIT_H_
+
+#define P_UNIT_DECAY_INTERVAL      "unit_decay_interval"
+#define P_UNIT_DECAY_QUOTA         "unit_decay_quota"
+#define P_UNIT_DECAY_FLAGS         "unit_decay_flags"
+#define P_UNIT_DECAY_MIN           "unit_decay_min"
+
+// Flags fuer P_UNIT_DECAY_FLAGS 
+// verhindert das Zerfallen einzelner Unit-Objekte.
+#define NO_DECAY             0x1
+// kein Decay bis zum ersten move() von einem Env in ein Env. (d.h. das erste
+// move() in ein Env (Clonen im create vom NPC) ist unberuecksichtigt.)
+#define NO_DECAY_UNTIL_MOVE  0x2
+// ungenaueren Zerfall benutzt, dabei aber immer min. eine Einheit zerfallen
+// lassen.
+#define INACCURATE_DECAY     0x4
+// kein prozentualer Zerfall, sondern P_UNIT_DECAY_QUOTA gibt eine abs. Menge
+// an Einheiten an.
+#define ABSOLUTE_DECAY       0x8
+
+#define U_GPU   "u_gpu"
+#define U_CPU   "u_cpu"
+#define U_IDS   "u_ids"
+#define U_REQ   "u_req"
+
+#define IS_EQUAL(x) (objectp(x) && (IsEqual(x) && x->IsEqual(ME)))
+
+#endif // _UNIT_H_
+
+#ifdef NEED_PROTOTYPES
+#ifndef _UNIT_H_PROTYPES_
+#define _UNIT_H_PROTYPES_
+// public functions
+varargs int    id(string str,int lvl);
+        int    IsEqual(object ob);
+        int    IsUnit();
+varargs int    move(object|string dest, int method);
+        int    *QueryCoinsPerUnits();
+        int    *QueryGramsPerUnits();
+varargs int remove(int silent);
+varargs string long();
+varargs string|<string>* name(int fall, int demo);
+varargs string QueryPronoun(int casus);
+        string short();
+        void   AddAmount(int am);
+        void   AddPluralId(mixed str);
+        void   AddSingularId(mixed str);
+        void   RemovePluralId(mixed str);
+        void   RemoveSingularId(mixed str);
+        void   reset();
+        void   SetCoinsPerUnits(int coins,int units);
+        void   SetGramsPerUnits(int grams,int units);
+public  int    DoDecay(int silent);
+
+// internal functions
+static    void    check_leave();
+protected void    DoDecayMessage(int oldamount, int zerfall);
+
+// Query- und Set-Methoden
+static  int    _query_plural();
+static  int    _query_total_weight();
+static  int    _query_u_req();
+static  int    _query_value();
+static  int    _query_weight();
+static  string|string* _query_name();
+static  int    _set_amount(int am);
+static  string|string* _set_name(mixed names);
+static  int    _set_weight(int num);
+static  int    _set_value(int num);
+static  int    _query_unit_decay_interval();
+static  int    _set_unit_decay_interval(int zeit);
+static  int    _query_unit_decay_quota();
+static  int    _set_unit_decay_quota(int quota);
+static  int    _query_unit_decay_min();
+static  int    _query_unit_decay_flags();
+
+#endif // _UNIT_H_PROTYPES_
+#endif // NEED_PROTOTYPES
+