diff --git a/src/ArmsItem.cpp b/src/ArmsItem.cpp
index c96f5a01..477dcfc3 100644
--- a/src/ArmsItem.cpp
+++ b/src/ArmsItem.cpp
@@ -275,7 +275,7 @@ static void MoveCampCursor()
 	}
 }
 
-void PutCampObject()
+static void PutCampObject()
 {
 	int i;
 	RECT rcArms;
diff --git a/src/ArmsItem.h b/src/ArmsItem.h
index c09ec130..c7a2f453 100644
--- a/src/ArmsItem.h
+++ b/src/ArmsItem.h
@@ -40,13 +40,13 @@ extern int gSelectedItem;
 extern ARMS gArmsData[ARMS_MAX];
 extern ITEM gItemData[ITEM_MAX];
 
-/// Clear the gArmsData array, reverting it to the default state (no weapons)
+/// Clear the weapons array, reverting it to the default state (no weapons)
 void ClearArmsData();
 
-/// Clear the gItemData array, reverting it to the default state (no items)
+/// Clear the item array, reverting it to the default state (no items)
 void ClearItemData();
 
-/// Add code to the weapon array, setting max_num as the max ammo, or find code and add max_num to its ammo. Fails if no space is available and the weapon isn't already present
+/// Add code to the weapons, setting max_num as the max ammo, or find code and add max_num to its ammo. Fails if no space is available and the weapon isn't already present
 BOOL AddArmsData(long code, long max_num);
 
 /// Remove code from the weapon array. Fails if code is not found.
@@ -55,16 +55,22 @@ BOOL SubArmsData(long code);
 /// Replace code1 with code2, setting max_num as its max ammo. Fails if code1 is not found.
 BOOL TradeArms(long code1, long code2, long max_num);
 
-/// Add code to the item array. Fails if no space is left
+/// Add code to the items. Fails if no space is left
 BOOL AddItemData(long code);
 
-/// Remove code from the item array. Fails if code was not found.
+/// Remove code from the item array. Fails if code is not found.
 BOOL SubItemData(long code);
 
-// Inventory loop
+/// Inventory loop. Returns mode.
 int CampLoop();
+
+/// Search for a in the items. Returns whether a was found.
 BOOL CheckItem(long a);
+
+/// Search for a in the weapons. Returns whether a was found.
 BOOL CheckArms(long a);
+
+/// Remove num ammo from the currently selected weapon. Returns whether there was any ammo left to fire.
 BOOL UseArmsEnergy(long num);
 BOOL ChargeArmsEnergy(long num);
 void FullArmsEnergy();