diff --git a/artifacts/scripting/headers/lib.inven.h b/artifacts/scripting/headers/lib.inven.h
index f010a16f..8d66ff09 100644
--- a/artifacts/scripting/headers/lib.inven.h
+++ b/artifacts/scripting/headers/lib.inven.h
@@ -3,6 +3,7 @@
 #define LIB_INVEN_H
 
 #include "define_lite.h"
+#define PID_BOTTLE_CAPS                     (41)
 
 /**
   Inventory contents as temp array to be used in foreach
diff --git a/artifacts/scripting/headers/sfall.h b/artifacts/scripting/headers/sfall.h
index d9471453..1ba72216 100644
--- a/artifacts/scripting/headers/sfall.h
+++ b/artifacts/scripting/headers/sfall.h
@@ -3,6 +3,7 @@
 
 // Recognised modes for set_shader_mode and get_game_mode
 #define WORLDMAP    (0x1)
+#define LOCALMAP    (0x2) //No point hooking this: would always be 1 at any point at which scripts are running
 #define DIALOG      (0x4)
 #define ESCMENU     (0x8)
 #define SAVEGAME    (0x10)
@@ -125,6 +126,11 @@
 #define ATKTYPE_HOOKKICK       (18)
 #define ATKTYPE_PIERCINGKICK   (19)
 
+//Some possible values for the 4th argument to hs_removeinvobj
+#define RMOBJ_DROP      (0x49B875)  //If the object is dropped manually by the player from the inventory screen
+#define RMOBJ_TRADE     (0x47761D)  //If the object is offered up as a trade
+#define RMOBJ_DROPMULTI (0x45C1CF)  //When dropping a part of a stack (RMOBJ_DROP occures first)
+
 // Return values for "typeof"
 #define VALTYPE_NONE  (0) // not used yet
 #define VALTYPE_INT   (1)