diff --git a/2dlib/pen.cpp b/2dlib/pen.cpp
index df0b61e7..2e019f87 100644
--- a/2dlib/pen.cpp
+++ b/2dlib/pen.cpp
@@ -86,7 +86,7 @@
  *
  * 5     2/04/97 11:14a Samir
  * Improved clipping system by adding a separate clipport based off of the
- * viewport's rectangle in it's parent surface
+ * viewport's rectangle in its parent surface
  *
  * $NoKeywords: $
  */
diff --git a/2dlib/pentext.cpp b/2dlib/pentext.cpp
index b018299a..6d93fbc9 100644
--- a/2dlib/pentext.cpp
+++ b/2dlib/pentext.cpp
@@ -70,7 +70,7 @@
  *
  * 7     2/04/97 11:14a Samir
  * Improved clipping system by adding a separate clipport based off of the
- * viewport's rectangle in it's parent surface
+ * viewport's rectangle in its parent surface
  *
  * 6     2/03/97 3:00p Samir
  * Fixed x updating problem in draw_text_line
diff --git a/2dlib/viewport.cpp b/2dlib/viewport.cpp
index 398a7f5b..ac269f6f 100644
--- a/2dlib/viewport.cpp
+++ b/2dlib/viewport.cpp
@@ -87,7 +87,7 @@
  *
  * 7     2/04/97 11:14a Samir
  * Improved clipping system by adding a separate clipport based off of the
- * viewport's rectangle in it's parent surface
+ * viewport's rectangle in its parent surface
  *
  * 6     2/03/97 7:56p Samir
  *
diff --git a/Descent3/Briefing.cpp b/Descent3/Briefing.cpp
index fa4b2ee5..a9cb57a4 100644
--- a/Descent3/Briefing.cpp
+++ b/Descent3/Briefing.cpp
@@ -63,7 +63,7 @@
  *
  * 45    7/11/98 9:16p Jeff
  * moved automatically drawing monitor overlay graphics from update() to a
- * function of it's own, that way the TelCom API can be avoided if needed
+ * function of its own, that way the TelCom API can be avoided if needed
  *
  * 44    7/09/98 8:33p Samir
  * changes for new streaming interface.
diff --git a/Descent3/DllWrappers.cpp b/Descent3/DllWrappers.cpp
index a8f0ea1a..7e5628a7 100644
--- a/Descent3/DllWrappers.cpp
+++ b/Descent3/DllWrappers.cpp
@@ -243,7 +243,7 @@ bool dInven_Add(Inventory *inven, int type, int id, object *parent, int aux_type
   return inven->Add(type, id, parent, aux_type, aux_id, flags, description);
 }
 
-// adds an object to the inventory (marked by it's objhandle)
+// adds an object to the inventory (marked by its objhandle)
 bool dInven_AddObject(Inventory *inven, int object_handle, int flags, char *description) {
   return inven->AddObject(object_handle, flags, description);
 }
@@ -253,7 +253,7 @@ bool dInven_AddCounterMeasure(Inventory *inven, int id, int aux_type, int aux_id
   return inven->AddCounterMeasure(id, aux_type, aux_id, flags, description);
 }
 
-//	removes an item from the inventory (reduces it's count by one...if there is no more, then it goes bye-bye)
+//	removes an item from the inventory (reduces its count by one...if there is no more, then it goes bye-bye)
 //	to remove an object that was added via objhandle, then pass the objhandle
 //	in the 'type' parameter, and don't pass in an id.
 bool dInven_Remove(Inventory *inven, int type, int id) { return inven->Remove(type, id); }
@@ -261,7 +261,7 @@ bool dInven_Remove(Inventory *inven, int type, int id) { return inven->Remove(ty
 // uses an item in the inventory (also reduces its count by one...if there is no more, then it goes bye-bye)
 bool dInven_Use(Inventory *inven, int type, int id, object *parent) { return inven->Use(type, id, parent); }
 
-// uses an item in the inventory (given it's objhandle).
+// uses an item in the inventory (given its objhandle).
 bool dInven_UseObjHandle(Inventory *inven, int objhandle, object *parent) { return inven->Use(objhandle, parent); }
 
 // returns how many unique type/ids are in the inventory
@@ -325,7 +325,7 @@ bool dInven_AtEnd(Inventory *inven) { return inven->AtEnd(); }
 // jump right to an item in the inventory
 void dInven_GotoPos(Inventory *inven, int newpos) { inven->GotoPos(newpos); }
 
-// jump right to an item in the inventory give it's type and id
+// jump right to an item in the inventory given its type and id
 // to jump to an item that was added via object handle, pass the object
 // handle in as the type, and make id -1.
 void dInven_GotoPosTypeID(Inventory *inven, int type, int id) { inven->GotoPos(type, id); }
diff --git a/Descent3/DllWrappers.h b/Descent3/DllWrappers.h
index 521c9da3..a94e6e37 100644
--- a/Descent3/DllWrappers.h
+++ b/Descent3/DllWrappers.h
@@ -95,18 +95,18 @@ void ChangePlayerShipIndex(int pnum, int ship_index);
 // adds a type/id item to the inventory (returns true on success)
 bool dInven_Add(Inventory *inven, int type, int id, object *parent = NULL, int aux_type = -1, int aux_id = -1,
                 int flags = 0, char *description = NULL);
-// adds an object to the inventory (marked by it's objhandle)
+// adds an object to the inventory (marked by its objhandle)
 bool dInven_AddObject(Inventory *inven, int object_handle, int flags = 0, char *description = NULL);
 // adds a special cased CounterMeasure into the inventory
 bool dInven_AddCounterMeasure(Inventory *inven, int id, int aux_type = -1, int aux_id = -1, int flags = 0,
                               char *description = NULL);
-//	removes an item from the inventory (reduces it's count by one...if there is no more, then it goes bye-bye)
+//	removes an item from the inventory (reduces its count by one...if there is no more, then it goes bye-bye)
 //	to remove an object that was added via objhandle, then pass the objhandle
 //	in the 'type' parameter, and don't pass in an id.
 bool dInven_Remove(Inventory *inven, int type, int id = -1);
 // uses an item in the inventory (also reduces its count by one...if there is no more, then it goes bye-bye)
 bool dInven_Use(Inventory *inven, int type, int id, object *parent = NULL);
-// uses an item in the inventory (given it's objhandle).
+// uses an item in the inventory (given its objhandle).
 bool dInven_UseObjHandle(Inventory *inven, int objhandle, object *parent = NULL);
 // returns how many unique type/ids are in the inventory
 int dInven_Size(Inventory *inven);
@@ -153,7 +153,7 @@ bool dInven_AtBeginning(Inventory *inven);
 bool dInven_AtEnd(Inventory *inven);
 // jump right to an item in the inventory
 void dInven_GotoPos(Inventory *inven, int newpos);
-// jump right to an item in the inventory give it's type and id
+// jump right to an item in the inventory given its type and id
 // to jump to an item that was added via object handle, pass the object
 // handle in as the type, and make id -1.
 void dInven_GotoPosTypeID(Inventory *inven, int type, int id);
diff --git a/Descent3/Inventory.cpp b/Descent3/Inventory.cpp
index 81ace0a3..ba782c0f 100644
--- a/Descent3/Inventory.cpp
+++ b/Descent3/Inventory.cpp
@@ -391,7 +391,7 @@ void Inventory::Reset(bool in_game, int reset_stage) {
   ValidatePos(true);
 }
 
-// adds an object to the inventory (marked by it's objhandle)
+// adds an object to the inventory (marked by its objhandle)
 bool Inventory::AddObject(int object_handle, int flags, const char *description) {
   // make sure we can fit another object
   if (count >= MAX_UNIQUE_INVEN_ITEMS) {
@@ -558,7 +558,7 @@ bool Inventory::AddCounterMeasure(int id, int aux_type, int aux_id, int flags, c
 
       newnode->count = 1;
     } else {
-      // there is an item of that type/id already, just increase it's count
+      // there is an item of that type/id already, just increase its count
       newnode->count++;
       // mprintf(0,"Inventory: Item #%d (%s) Count increased to %d\n",count,newnode->name,newnode->count);
     }
@@ -635,7 +635,7 @@ bool Inventory::AddObjectItem(int otype, int oid, int oauxt, int oauxi, int flag
 
       newnode->count = 1;
     } else {
-      // there is an item of that type/id already, just increase it's count
+      // there is an item of that type/id already, just increase its count
       newnode->count++;
     }
   }
diff --git a/Descent3/Inventory.h b/Descent3/Inventory.h
index 0afe0a1a..2779a093 100644
--- a/Descent3/Inventory.h
+++ b/Descent3/Inventory.h
@@ -248,11 +248,11 @@ public:
   // adds a type/id item to the inventory (returns true on success)
   bool Add(int type, int id, object *parent = NULL, int aux_type = -1, int aux_id = -1, int flags = 0,
            const char *description = NULL);
-  // adds an object to the inventory (marked by it's objhandle)
+  // adds an object to the inventory (marked by its objhandle)
   bool AddObject(int object_handle, int flags = 0, const char *description = NULL);
   // adds a special cased CounterMeasure into the inventory
   bool AddCounterMeasure(int id, int aux_type = -1, int aux_id = -1, int flags = 0, const char *description = NULL);
-  // removes an item from the inventory (reduces it's count by one...if there is no more, then it goes bye-bye)
+  // removes an item from the inventory (reduces its count by one...if there is no more, then it goes bye-bye)
   bool Remove(int type, int id = -1);
   // uses an item in the inventory (also reduces its count by one...if there is no more, then it goes bye-bye)
   bool Use(int type, int id, object *parent = NULL);
diff --git a/Descent3/OsirisLoadandBind.cpp b/Descent3/OsirisLoadandBind.cpp
index ab24008d..0a498f6a 100644
--- a/Descent3/OsirisLoadandBind.cpp
+++ b/Descent3/OsirisLoadandBind.cpp
@@ -97,7 +97,7 @@
  * scripts are not really used in demos)
  *
  * 94    3/10/99 6:44p Jeff
- * fixed exported game cinematic function for canned cinematics, so it's
+ * fixed exported game cinematic function for canned cinematics, so its
  * prototype doesn't change (oem patch friendly)
  *
  * 93    3/10/99 6:21p Jeff
@@ -1427,9 +1427,9 @@ void Osiris_UnloadMissionModule(void) {
 //	Osiris_BindScriptsToObject
 //	Purpose:
 //		Call this function after an object has been created to bind all the scripts associated
-//	with it to the object.  This function must be called near the end of it's initialization,
+//	with it to the object.  This function must be called near the end of its initialization,
 //	to make sure that all fields have been filled in.  This function does not call any events.
-//	This function will also load any dll's needed for it's game script.
+//	This function will also load any dll's needed for its game script.
 //	returns false if nothing was bound.
 bool Osiris_BindScriptsToObject(object *obj) {
   ASSERT(obj->osiris_script == NULL);
@@ -1520,7 +1520,7 @@ bool Osiris_BindScriptsToObject(object *obj) {
       obj->osiris_script->level_script.script_instance = NULL;
       os = obj->osiris_script;
 
-      // we have the module loaded for the object, now we need to setup it's default script
+      // we have the module loaded for the object, now we need to setup its default script
       gos_id = OSIRIS_loaded_modules[dll_id].GetGOScriptID(page_name, isdoor);
 
       if (gos_id == -1) {
@@ -1795,7 +1795,7 @@ void Osiris_DetachScriptsFromObject(object *obj) {
 
   os = obj->osiris_script;
 
-  // free up the scripts for the object, starting with it's default script
+  // free up the scripts for the object, starting with its default script
   if (os->default_script.script_instance) {
     // first we need to free the instance
     dll_id = os->default_script.DLLID;
@@ -1989,7 +1989,7 @@ bool Osiris_CallLevelEvent(int event, tOSIRISEventInfo *data) {
   }
 
   if (tOSIRISCurrentLevel.level_loaded) {
-    // there is a loaded level, get it's dll id and call it's event
+    // there is a loaded level, get its dll id and call its event
     int dll_id = tOSIRISCurrentLevel.dll_id;
     void *instance = tOSIRISCurrentLevel.instance;
 
@@ -2116,7 +2116,7 @@ bool Osiris_IsEventEnabled(int event) {
 //		Triggers an event for an object.  Pass in the event number and the associated
 //	structure of data.  All events will be chained through the associated scripts of the
 //	object (as long as they are available) in the order: custom script, level script,
-//	mission script, and finally it's default script.  The chain breaks if one of the scripts
+//	mission script, and finally its default script.  The chain breaks if one of the scripts
 //	returns false on the call to their CallInstanceEvent().
 bool Osiris_CallEvent(object *obj, int event, tOSIRISEventInfo *data) {
   if ((Game_mode & GM_MULTI) && (Netgame.local_role != LR_SERVER)) {
@@ -3291,7 +3291,7 @@ to OMMS_Attach() and OMMS_Detach().  ALWAYS make sure that you detach before you
 
 // Allocates a block of global memory for this module, of size amount_of_memory.
 // unique_identfier is the script provided unique ID which is used throughout.
-// script_identifier is the pointer of data provided to the script in it's InitializeDLL function (really the name of
+// script_identifier is the pointer of data provided to the script in its InitializeDLL function (really the name of
 the script)
 // Returns -1 if there isn't enough available memory
 // Returns -2 if the unique identifier passed in is already used, but the requested amount_of_memory is different
@@ -3324,7 +3324,7 @@ subtracts).
 //	Returns -1 if the module was never OMMS_Malloc()'d.
 OMMSHANDLE OMMS_Find(uint32_t unique_identifier,char *script_identifier);
 
-//	Returns information about the OMMS memory given it's handle returned from the OMMS_Find() or
+//	Returns information about the OMMS memory given its handle returned from the OMMS_Find() or
 //	OMMS_Malloc(). Returns 0 if the handle was invalid, 1 if the information has been filled in;
 //	Pass NULL in for those parameters you don't need information about.
 char OMMS_GetInfo(OMMSHANDLE handle,uint32_t *mem_size,uint32_t *uid,uint16_t *reference_count,uint8_t *has_free_been_called);
@@ -3375,7 +3375,7 @@ tOMMSNode *Osiris_OMMS_FindHandle(OMMSHANDLE handle, tOMMSHashNode **hash = NULL
 
 // Allocates a block of global memory for this module, of size amount_of_memory.
 // unique_identfier is the script provided unique ID which is used throughout.
-// script_identifier is the pointer of data provided to the script in it's InitializeDLL function (really the name of
+// script_identifier is the pointer of data provided to the script in its InitializeDLL function (really the name of
 // the script) Returns -1 if there isn't enough available memory Returns -2 if the unique identifier passed in is
 // already used, but the requested amount_of_memory is different Returns -3 if the unique identifier passed in is
 // already used, same size requested
@@ -3407,7 +3407,7 @@ static void Osiris_OMMS_Free(OMMSHANDLE handle);
 //	Returns -1 if the module was never OMMS_Malloc()'d.
 static OMMSHANDLE Osiris_OMMS_Find(uint32_t unique_identifier, char *script_identifier);
 
-//	Returns information about the OMMS memory given it's handle returned from the OMMS_Find() or
+//	Returns information about the OMMS memory given its handle returned from the OMMS_Find() or
 //	OMMS_Malloc(). Returns 0 if the handle was invalid, 1 if the information has been filled in;
 //	Pass NULL in for those parameters you don't need information about.
 static char Osiris_OMMS_GetInfo(OMMSHANDLE handle, uint32_t *mem_size, uint32_t *uid, uint16_t *reference_count,
@@ -3765,7 +3765,7 @@ tOMMSNode *Osiris_OMMS_FindHandle(OMMSHANDLE handle, tOMMSHashNode **hash) {
 
 // Allocates a block of global memory for this module, of size amount_of_memory.
 // unique_identfier is the script provided unique ID which is used throughout.
-// script_identifier is the pointer of data provided to the script in it's InitializeDLL function (really the name of
+// script_identifier is the pointer of data provided to the script in its InitializeDLL function (really the name of
 // the script) Returns -1 if there isn't enough available memory Returns -2 if the unique identifier passed in is
 // already used, but the requested amount_of_memory is different If the memory has already been allocated, it will
 // return the handle.
@@ -3865,7 +3865,7 @@ OMMSHANDLE Osiris_OMMS_Find(uint32_t unique_identifier, char *script_identifier)
   return ((hash->base_id << 16) | (node->id));
 }
 
-//	Returns information about the OMMS memory given it's handle returned from the OMMS_Find() or
+//	Returns information about the OMMS memory given its handle returned from the OMMS_Find() or
 //	OMMS_Malloc(). Returns 0 if the handle was invalid, 1 if the information has been filled in;
 //	Pass NULL in for those parameters you don't need information about.
 char Osiris_OMMS_GetInfo(OMMSHANDLE handle, uint32_t *mem_size, uint32_t *uid, uint16_t *reference_count,
diff --git a/Descent3/Player.cpp b/Descent3/Player.cpp
index 65b02216..6bf574e9 100644
--- a/Descent3/Player.cpp
+++ b/Descent3/Player.cpp
@@ -2576,7 +2576,7 @@ void ResetPlayerObject(int slot, bool f_reset_pos) {
   ResetReticle();
 }
 
-// Resets a player's control type back to it's default setting
+// Resets a player's control type back to its default setting
 void ResetPlayerControlType(int slot) {
   ASSERT(slot >= 0 && slot < MAX_PLAYERS);
 
diff --git a/Descent3/TelCom.cpp b/Descent3/TelCom.cpp
index 0cc762bb..3c1c8ab2 100644
--- a/Descent3/TelCom.cpp
+++ b/Descent3/TelCom.cpp
@@ -286,7 +286,7 @@
  *
  * 72    7/11/98 9:16p Jeff
  * moved automatically drawing monitor overlay graphics from update() to a
- * function of it's own, that way the TelCom API can be avoided if needed
+ * function of its own, that way the TelCom API can be avoided if needed
  *
  * 71    7/08/98 8:06p Jeff
  * Initial creation of TelComCargo
@@ -1273,7 +1273,7 @@ bool TelComMainMenu(tTelComInfo *tcs) {
 
     strcpy(MMButtons[mm].text, TXT(TCMMButtonDesc[mm]));
 
-    // now if it's enabled,fill in it's info
+    // now if it's enabled, fill in its info
     // create the button
     if (MMButtons[mm].enabled) {
       buttdesc.x = mm_x;
@@ -2457,7 +2457,7 @@ void TelComEnableSystemKey(int key, bool enable) {
 }
 
 /*
- *	Calling this sends an event message to the TelCom, adding it to it's event queue
+ *	Calling this sends an event message to the TelCom, adding it to its event queue
  *
  */
 void TelComSendEvent(int event_num, int parm1, int parm2) {
@@ -2967,7 +2967,7 @@ void TelComHandleKeyPress(int key, bool click, int screen_id) {
       curr_focus = found;
     }
 
-    // if the effect to use (curr_focus) is a button, than get it's parent ID, make sure it is a text effect
+    // if the effect to use (curr_focus) is a button, than get its parent ID, make sure it is a text effect
     if (TCEffects[curr_focus].type == EFX_BUTTON) {
       int parent_id = TCEffects[curr_focus].buttoninfo.parent;
       if (parent_id == -1 ||
@@ -3994,7 +3994,7 @@ void TelCom_ClearSystemQueue(void) {
 }
 
 /*
- *	Calling this sends an event message to the TelCom System Queue, adding it to it's event queue
+ *	Calling this sends an event message to the TelCom System Queue, adding it to its event queue
  *
  */
 void TelCom_SendSystemEvent(int event_num, int parm1, int parm2) {
diff --git a/Descent3/TelCom.h b/Descent3/TelCom.h
index ad137eb0..13d0ba22 100644
--- a/Descent3/TelCom.h
+++ b/Descent3/TelCom.h
@@ -242,7 +242,7 @@ bool TelComJumpScreen(int screen);
  */
 void TelComInitEventManager(void);
 /*
- *	Calling this sends an event message to the TelCom, adding it to it's event queue
+ *	Calling this sends an event message to the TelCom, adding it to its event queue
  *
  */
 void TelComSendEvent(int event_num, int parm1 = 0, int parm2 = 0);
diff --git a/Descent3/TelComAutoMap.cpp b/Descent3/TelComAutoMap.cpp
index d7e7c7c3..406bd875 100644
--- a/Descent3/TelComAutoMap.cpp
+++ b/Descent3/TelComAutoMap.cpp
@@ -136,7 +136,7 @@
  *
  * 4     7/11/98 9:16p Jeff
  * moved automatically drawing monitor overlay graphics from update() to a
- * function of it's own, that way the TelCom API can be avoided if needed
+ * function of its own, that way the TelCom API can be avoided if needed
  *
  * 3     6/16/98 10:54a Jeff
  *
diff --git a/Descent3/TelComEffects.cpp b/Descent3/TelComEffects.cpp
index 29a28bff..70ba72d7 100644
--- a/Descent3/TelComEffects.cpp
+++ b/Descent3/TelComEffects.cpp
@@ -394,7 +394,7 @@ void EfxFreeEffect(tceffect *tce) {
   tce->monitor = -1;
 }
 
-// Initializes an effect based on it's type
+// Initializes an effect based on its type
 void EfxInit(tceffect *tce, bool tab_stop, bool gets_focus) {
 
   ASSERT(tce);
diff --git a/Descent3/TelComEffects.h b/Descent3/TelComEffects.h
index 1faa476e..ba38e445 100644
--- a/Descent3/TelComEffects.h
+++ b/Descent3/TelComEffects.h
@@ -307,7 +307,7 @@ void EfxDestroyScreen(int screen);
 // Frees up any memory allocated for effect, sets type to EFX_NONE
 void EfxFreeEffect(tceffect *tce);
 
-// Initializes an effect based on it's type
+// Initializes an effect based on its type
 void EfxInit(tceffect *tce, bool tab_stop, bool gets_focus);
 
 // Renders a Monitor
diff --git a/Descent3/cockpit.cpp b/Descent3/cockpit.cpp
index 329a4993..3898a7b8 100644
--- a/Descent3/cockpit.cpp
+++ b/Descent3/cockpit.cpp
@@ -247,7 +247,7 @@ static float KeyframeAnimateCockpit();
 //	loads cockpit. model_name = NULL, then will not load in model name.
 static void LoadCockpitInfo(const char *ckt_file, tCockpitCfgInfo *info);
 //////////////////////////////////////////////////////////////////////////////
-//	Initializes the cockpit by loading it in and initializing all it's gauges.
+//	Initializes the cockpit by loading it in and initializing all its gauges.
 //	initialization of cockpit.
 void InitCockpit(int ship_index) {
   tCockpitCfgInfo cfginfo;
diff --git a/Descent3/doorway.h b/Descent3/doorway.h
index 6849ffc8..1def11f7 100644
--- a/Descent3/doorway.h
+++ b/Descent3/doorway.h
@@ -57,7 +57,7 @@
  *
  * 7     10/06/97 1:03p Samir
  * Took out script name.  Doorways are objects, and if there is a custom
- * script for a doorway, we look at it's object.
+ * script for a doorway, we look at its object.
  *
  * 6     10/06/97 1:01p Jason
  * made doors work with scripts (sort of)
diff --git a/Descent3/game.cpp b/Descent3/game.cpp
index db9ed8d4..f5ba8a82 100644
--- a/Descent3/game.cpp
+++ b/Descent3/game.cpp
@@ -294,7 +294,7 @@
  *
  * 109   10/11/98 3:03a Jeff
  * made the game handle the Multiplayer D3M file refusing to load (because
- * it's init failed for some reason)
+ * its init failed for some reason)
  *
  * 108   10/08/98 7:28p Samir
  * revamped sequencing.
@@ -1262,7 +1262,7 @@ void EndFrame() {
 
   FramePop(&x1, &y1, &x2, &y2, &clear); // pop off frame just ending
 
-  // see if there is a frame on the stack...if so, restore it's settings
+  // see if there is a frame on the stack...if so, restore its settings
   if (FramePeek(&x1, &y1, &x2, &y2, &clear)) {
     // restore this frame
     StartFrame(x1, y1, x2, y2, clear, false);
diff --git a/Descent3/gamecinematics.cpp b/Descent3/gamecinematics.cpp
index 134baa00..c930b23d 100644
--- a/Descent3/gamecinematics.cpp
+++ b/Descent3/gamecinematics.cpp
@@ -94,7 +94,7 @@
  * intro cams are letterbox
  *
  * 28    3/10/99 6:44p Jeff
- * fixed exported game cinematic function for canned cinematics, so it's
+ * fixed exported game cinematic function for canned cinematics, so its
  * prototype doesn't change (oem patch friendly)
  *
  * 27    3/10/99 6:20p Jeff
diff --git a/Descent3/init.cpp b/Descent3/init.cpp
index 15521eaf..41a1a9d0 100644
--- a/Descent3/init.cpp
+++ b/Descent3/init.cpp
@@ -776,7 +776,7 @@
  * Added Terrain casting to config
  *
  * 82    5/06/98 4:32p Samir
- * moved ui init back to it's proper place.
+ * moved ui init back to its proper place.
  *
  * 81    5/06/98 12:44p Jeff
  * added saving/restoring video resolution
@@ -1532,12 +1532,12 @@ void InitIOSystems(bool editor) {
     }
   }
 
-  // Initialize debug graph early incase any system uses it in it's init
+  // Initialize debug graph early incase any system uses it in its init
   INIT_MESSAGE(("Initializing debug graph."));
   DebugGraph_Initialize();
 
   //	initialize all the OSIRIS systems
-  //	extract from extra.hog first, so it's dll files are listed ahead of d3.hog's
+  //	extract from extra.hog first, so its DLL files are listed ahead of d3.hog's
   INIT_MESSAGE(("Initializing OSIRIS."));
   Osiris_InitModuleLoader();
   if (extra13_hid != -1)
diff --git a/Descent3/loadstate.cpp b/Descent3/loadstate.cpp
index b364d3c9..54780087 100644
--- a/Descent3/loadstate.cpp
+++ b/Descent3/loadstate.cpp
@@ -976,7 +976,7 @@ int LGSObjects(CFILE *fp, int version) {
     uint8_t l_rend_type;
     gs_ReadByte(fp, l_rend_type);
 
-    // See if the object has changed from it's original lightmap type
+    // See if the object has changed from its original lightmap type
     // DAJ added check for type
     if ((Objects[i].type != OBJ_NONE) && (Objects[i].lighting_render_type == LRT_LIGHTMAPS) &&
         (l_rend_type != LRT_LIGHTMAPS)) {
diff --git a/Descent3/localization.cpp b/Descent3/localization.cpp
index c72bd588..03766c00 100644
--- a/Descent3/localization.cpp
+++ b/Descent3/localization.cpp
@@ -424,7 +424,7 @@ try_english:
   return (scount == (*size));
 }
 
-// Given a string table and it's count of strings, it will free up it's memory
+// Given a string table and its count of strings, it will free up its memory
 void DestroyStringTable(char **table, int size) {
   if ((size > 0) && (table)) {
     for (int i = 0; i < size; i++) {
diff --git a/Descent3/localization.h b/Descent3/localization.h
index 94e4426a..442ae912 100644
--- a/Descent3/localization.h
+++ b/Descent3/localization.h
@@ -64,7 +64,7 @@ const char *GetStringFromTable(int index);
 // it will load the string table and fill in the information
 // returns true on success
 bool CreateStringTable(const char *filename, char ***table, int *size);
-// Given a string table and it's count of strings, it will free up it's memory
+// Given a string table and its count of strings, it will free up its memory
 void DestroyStringTable(char **table, int size);
 
 // GrowString class
diff --git a/Descent3/multi.cpp b/Descent3/multi.cpp
index 1c41a83a..fb43f030 100644
--- a/Descent3/multi.cpp
+++ b/Descent3/multi.cpp
@@ -5363,7 +5363,7 @@ void MultiSendObject(object *obj, uint8_t announce, uint8_t demo_record) {
 
   MultiAddByte(obj->type, data, &count);
   MultiAddUint(index, data, &count);
-  // If it's a ghost object (type==OBJ_DUMMY) send it's old type
+  // If it's a ghost object (type==OBJ_DUMMY) send its old type
   if (obj->type == OBJ_DUMMY)
     MultiAddByte(obj->dummy_type, data, &count);
 
diff --git a/Descent3/object.cpp b/Descent3/object.cpp
index 75ec72f4..6a0c7490 100644
--- a/Descent3/object.cpp
+++ b/Descent3/object.cpp
@@ -566,7 +566,7 @@
  * Added another safety check for docycledanim
  *
  * 149   8/12/98 6:37p Jeff
- * added functions to ghost an object (make it's type to OBJ_DUMMY) and
+ * added functions to ghost an object (make its type to OBJ_DUMMY) and
  * unghost
  *
  * 148   8/12/98 12:04p Chris
@@ -3465,7 +3465,7 @@ object *ObjGetUltimateParent(object *child) {
   return ret;
 }
 
-// Sets an object to a type OBJ_DUMMY (saves it's old type) so it won't be renderered, etc, but still alive
+// Sets an object to a type OBJ_DUMMY (saves its old type) so it won't be renderered, etc, but still alive
 void ObjGhostObject(int objnum) {
   ASSERT(objnum >= 0 && objnum < MAX_OBJECTS);
   if (objnum < 0 || objnum >= MAX_OBJECTS)
@@ -3485,7 +3485,7 @@ void ObjGhostObject(int objnum) {
   obj->type = OBJ_DUMMY;
 }
 
-// Restores a ghosted object back to it's old type
+// Restores a ghosted object back to its old type
 void ObjUnGhostObject(int objnum) {
   ASSERT(objnum >= 0 && objnum < MAX_OBJECTS);
   if (objnum < 0 || objnum >= MAX_OBJECTS)
diff --git a/Descent3/object.h b/Descent3/object.h
index 4d9b12f9..bc52ab93 100644
--- a/Descent3/object.h
+++ b/Descent3/object.h
@@ -174,7 +174,7 @@
  * added ObjUnlink call.
  *
  * 130   8/12/98 6:37p Jeff
- * added functions to ghost an object (make it's type to OBJ_DUMMY) and
+ * added functions to ghost an object (make its type to OBJ_DUMMY) and
  * unghost
  *
  * 129   8/12/98 12:04p Chris
@@ -807,7 +807,7 @@ object *ObjGetUltimateParent(object *child);
 // Sets an object to a type OBJ_DUMMY (saves its old type) so it won't be renderered, etc, but still alive
 void ObjGhostObject(int objnum);
 
-// Restores a ghosted object back to it's old type
+// Restores a ghosted object back to its old type
 void ObjUnGhostObject(int objnum);
 
 /////////////////////////////////
diff --git a/Descent3/osiris_dll.h b/Descent3/osiris_dll.h
index 7b101da1..50947cc9 100644
--- a/Descent3/osiris_dll.h
+++ b/Descent3/osiris_dll.h
@@ -193,9 +193,9 @@ extern void Osiris_UnloadMissionModule(void);
 //	Osiris_BindScriptsToObject
 //	Purpose:
 //		Call this function after an object has been created to bind all the scripts associated
-//	with it to the object.  This function must be called near the end of it's initialization,
+//	with it to the object.  This function must be called near the end of its initialization,
 //	to make sure that all fields have been filled in.  This function does not call any events.
-//	This function will also load any dll's needed for it's game script.
+//	This function will also load any dll's needed for its game script.
 //	returns false if nothing was bound.
 extern bool Osiris_BindScriptsToObject(object *obj);
 
@@ -210,7 +210,7 @@ extern void Osiris_DetachScriptsFromObject(object *obj);
 //		Triggers an event for an object.  Pass in the event number and the associated
 //	structure of data.  All events will be chained through the associated scripts of the
 //	object (as long as they are available) in the order: custom script, level script,
-//	mission script, and finally it's default script.  The chain breaks if one of the scripts
+//	mission script, and finally its default script.  The chain breaks if one of the scripts
 //	returns false on the call to their CallInstanceEvent().
 extern bool Osiris_CallEvent(object *obj, int event, tOSIRISEventInfo *data);
 
@@ -244,7 +244,7 @@ extern void Osiris_ResetAllTimers(void);
 
 //	Osiris_CancelTimer
 //	Purpose:
-//		Cancels a timer thats in use, given it's ID
+//		Cancels a timer thats in use, given its ID
 extern void Osiris_CancelTimer(int handle);
 
 //	Osiris_TimerExists
diff --git a/Descent3/osiris_predefs.cpp b/Descent3/osiris_predefs.cpp
index b55e35d7..307436da 100644
--- a/Descent3/osiris_predefs.cpp
+++ b/Descent3/osiris_predefs.cpp
@@ -914,10 +914,10 @@ void osipf_ObjectCustomAnim(int handle, float start, float end, float time, char
   }
 }
 
-// searches for an object id given it's name
+// searches for an object id given its name
 int osipf_ObjectFindID(const char *name) { return FindObjectIDName(IGNORE_TABLE(name)); }
 
-// searches for an object id given it's name
+// searches for an object id given its name
 int osipf_ObjectFindType(const char *name) {
   int id = FindObjectIDName(IGNORE_TABLE(name));
 
@@ -3682,7 +3682,7 @@ int osipf_GetLanguageSetting(void) {
 }
 
 // Sets/Gets information about a path.
-// If you change is PV_ALL (or any of it's individual components), pass in a pointer to an
+// If you change is PV_ALL (or any of its individual components), pass in a pointer to an
 // osiris_path_node_info struct.  For the others, you must pass in an appropriate pointer
 // (i.e. an int* for PV_I_NUMNODES).  You can only set PV_ALL components.
 //	for PV_I_NUMNODES, path_id MUST be specified, node_id is ignored
diff --git a/Descent3/osiris_predefs.h b/Descent3/osiris_predefs.h
index 0df22fa2..3db4e2c1 100644
--- a/Descent3/osiris_predefs.h
+++ b/Descent3/osiris_predefs.h
@@ -189,7 +189,7 @@ bool osipf_CallTriggerEvent(int trignum, int event, tOSIRISEventInfo *ei);
 // Touches a sound file so it loads into memory
 void osipf_SoundTouch(char *str);
 
-// searches for an object id given it's name
+// searches for an object id given its name
 int osipf_ObjectFindID(const char *name);
 
 int osipf_ObjectFindType(const char *name);
@@ -440,7 +440,7 @@ char osipf_GameGetDiffLevel(void);
 int osipf_GetLanguageSetting(void);
 
 // Sets/Gets information about a path.
-// If you change is PV_ALL (or any of it's individual components), pass in a pointer to an
+// If you change is PV_ALL (or any of its individual components), pass in a pointer to an
 // osiris_path_node_info struct.  For the others, you must pass in an appropriate pointer
 // (i.e. an int* for PV_I_NUMNODES).  You can only set PV_ALL components.
 //	for PV_I_NUMNODES, path_id MUST be specified, node_id is ignored
diff --git a/Descent3/pilot.cpp b/Descent3/pilot.cpp
index dba17799..c9a8e335 100644
--- a/Descent3/pilot.cpp
+++ b/Descent3/pilot.cpp
@@ -2612,7 +2612,7 @@ bool PltSelectShip(pilot *Pilot) {
       break;
     }
     case ID_IMPORTSOUND: {
-      // Import the sound, set it's sample to xx.xKhz and xbit depth, attach the CRC to the filename
+      // Import the sound, set its sample to xx.xKhz and xbit depth, attach the CRC to the filename
       // and place in custom/sounds.  Then update the audio taunt combo boxes
       std::filesystem::path path;
       if (DoPathFileDialog(false, path, TXT_CHOOSE, {"*.wav"}, PFDF_FILEMUSTEXIST)) {
diff --git a/Descent3/pilot_class.cpp b/Descent3/pilot_class.cpp
index 18b81339..809e613a 100644
--- a/Descent3/pilot_class.cpp
+++ b/Descent3/pilot_class.cpp
@@ -399,7 +399,7 @@ void pilot::verify(void) {
   */
 }
 
-// This function makes the pilot file so it's write pending, meaning that
+// This function makes the pilot file so its write is pending, meaning that
 // on the next call to flush, it will actually write out the data.  There is
 // no need to constantly do file access unless it's really needed
 void pilot::write(void) { write_pending = true; }
diff --git a/Descent3/pilot_class.h b/Descent3/pilot_class.h
index 185a2c6a..f1c250dc 100644
--- a/Descent3/pilot_class.h
+++ b/Descent3/pilot_class.h
@@ -183,7 +183,7 @@ public:
   // It will correct any messed data.
   void verify(void);
 
-  // This function makes the pilot file so it's write pending, meaning that
+  // This function makes the pilot file so its write is pending, meaning that
   // on the next call to flush, it will actually write out the data.  There is
   // no need to constantly do file access unless it's really needed
   void write(void);
diff --git a/Descent3/player.h b/Descent3/player.h
index 6f052b77..c3c3495d 100644
--- a/Descent3/player.h
+++ b/Descent3/player.h
@@ -481,7 +481,7 @@ void ResetPlayerObject(int slot, bool f_reset_pos = true);
 // Makes the player into an AI controlled physics object
 void PlayerSetControlToAI(int slot, float velocity = 75.0f);
 
-// Resets a player's control type back to it's default setting
+// Resets a player's control type back to its default setting
 void ResetPlayerControlType(int slot);
 
 void InitPlayerNewGame(int slot);
diff --git a/Descent3/screens.cpp b/Descent3/screens.cpp
index d7845506..8c921bf1 100644
--- a/Descent3/screens.cpp
+++ b/Descent3/screens.cpp
@@ -256,7 +256,7 @@ void PLResultsFrame() {
   // Right now we don't want you to do anything
   if (background_loaded)
     DrawLargeBitmap(&level_bmp, 0, 0, 1.0f);
-  // Call the DLL so it can do it's thing
+  // Call the DLL so it can do its thing
   if (Game_mode & GM_MULTI) {
     CallGameDLL(EVT_CLIENT_GAMEPOSTLEVELRESULTS, &DLLInfo);
   } else {
diff --git a/Descent3/spew.h b/Descent3/spew.h
index d2f9d752..546cc94a 100644
--- a/Descent3/spew.h
+++ b/Descent3/spew.h
@@ -79,7 +79,7 @@
 #include "vecmat.h"
 
 #define SF_FORCEUPDATE 0x01     // this spew needs to do an update no matter what next time it spews (gunpoint)
-#define SF_UPDATEDFORFRAME 0x02 // thie spew has already updated it's position for this frame, no need to do it again
+#define SF_UPDATEDFORFRAME 0x02 // thie spew has already updated its position for this frame, no need to do it again
 #define SF_UPDATEEVERYFRAME 0x04
 
 struct guninfo {
diff --git a/cfile/cfile.h b/cfile/cfile.h
index 59e45566..0b33680b 100644
--- a/cfile/cfile.h
+++ b/cfile/cfile.h
@@ -31,7 +31,7 @@
  *
  * 15    9/14/99 7:49p Jeff
  * added cf_OpenFileInLibrary() to force a file to be opened from a
- * specific library.  Added a way to get a crc of a file given it's CFILE
+ * specific library.  Added a way to get a CRC of a file given its CFILE
  * *.
  *
  * 14    5/20/99 5:32p Matt
diff --git a/ddio/ddio.h b/ddio/ddio.h
index a46e3b47..58613267 100644
--- a/ddio/ddio.h
+++ b/ddio/ddio.h
@@ -54,7 +54,7 @@
  * high level key flush.
  *
  * 22    2/04/99 11:19a Kevin
- * Added function to find a CD drive letter based on it's volume name
+ * Added function to find a CD drive letter based on its volume name
  *
  * 21    1/25/99 6:47p Samir
  * allow slow keyboard
diff --git a/ddio/lnxfile.cpp b/ddio/lnxfile.cpp
index 639eecc7..e936b490 100644
--- a/ddio/lnxfile.cpp
+++ b/ddio/lnxfile.cpp
@@ -352,7 +352,7 @@ void ddio_CleanPath(char *dest, const char *srcPath) {
         curr_index = 0;           // can't go further than root
       dir_order[curr_index] = -1; // invalidate current slot
     } else if (stricmp(directories[count], ".")) {
-      // we have a normal directory, add it's index
+      // we have a normal directory, add its index
       dir_order[curr_index] = count;
       curr_index++;
     }
diff --git a/ddio/winfile.cpp b/ddio/winfile.cpp
index 3ed68f7f..aee19d6f 100644
--- a/ddio/winfile.cpp
+++ b/ddio/winfile.cpp
@@ -42,7 +42,7 @@
  * removed int3 in CopyFileTime
  *
  * 22    2/04/99 11:19a Kevin
- * Added function to find a CD drive letter based on it's volume name
+ * Added function to find a CD drive letter based on its volume name
  *
  * 21    12/08/98 12:17p Jeff
  * added 3 functions (similar to ddio_FindFiles) for finding directories
@@ -431,7 +431,7 @@ void ddio_CleanPath(char *dest, const char *srcPath) {
         curr_index = 0;           // can't go further than root
       dir_order[curr_index] = -1; // invalidate current slot
     } else if (stricmp(directories[count], ".")) {
-      // we have a normal directory, add it's index
+      // we have a normal directory, add its index
       dir_order[curr_index] = count;
       curr_index++;
     }
diff --git a/editor/DallasMainDlg.cpp b/editor/DallasMainDlg.cpp
index 32dc36ae..f004a0ff 100644
--- a/editor/DallasMainDlg.cpp
+++ b/editor/DallasMainDlg.cpp
@@ -6597,7 +6597,7 @@ void CDallasMainDlg::ParseOutActionVarTypes(char *new_desc, char *old_desc) {
   new_desc_text = "";
   while ((*old_desc) != '\0') {
 
-    // If it's start of a param block, extract the param name
+    // If it's the start of a param block, extract the param name
     if ((*old_desc) == '[') {
       ParseParamBlock(old_desc, name_text, default_text, range_text);
       new_desc_text += '[';
@@ -15950,7 +15950,7 @@ bool CDallasMainDlg::ExportScriptToFile(char *filename, char *script_name) {
               return FALSE;
             }
 
-            // Copy the new script into it's place
+            // Copy the new script into its place
             O(("%s", script_name));
             O(("VERSION		%d", DALLAS_SAVE_VERSION));
 
diff --git a/editor/ObjCScript.h b/editor/ObjCScript.h
index 0e63624d..5efef4b2 100644
--- a/editor/ObjCScript.h
+++ b/editor/ObjCScript.h
@@ -167,7 +167,7 @@ void EndScriptFileList();
 // identify indices into script names array from the name.
 int FindScriptIDFromName(const char *name);
 
-//	find event id from it's name or vice-versa
+//	find event id from its name or vice-versa
 char *FindEventNameFromID(int id);
 int FindEventIDFromName(const char *name);
 
diff --git a/editor/ScriptCompilerAPI.cpp b/editor/ScriptCompilerAPI.cpp
index 89be2b9c..8fb33737 100644
--- a/editor/ScriptCompilerAPI.cpp
+++ b/editor/ScriptCompilerAPI.cpp
@@ -443,7 +443,7 @@ bool ScriptCreateEmptyLevelScript(char *filename) {
 
   O(("//	GetGOScriptID"));
   O(("//	Purpose:"));
-  O(("//		Given the name of the object (from it's pagename), this function will search through it's"));
+  O(("//		Given the name of the object (from its pagename), this function will search through its"));
   O(("//	list of General Object Scripts for a script with a matching name (to see if there is a script"));
   O(("//	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID"));
   O(("//	is to be returned back to Descent 3.  This ID will be used from here on out for all future"));
@@ -645,7 +645,7 @@ bool ScriptCreateEmptyGameScript(char *filename) {
 
   O(("//	GetGOScriptID"));
   O(("//	Purpose:"));
-  O(("//		Given the name of the object (from it's pagename), this function will search through it's"));
+  O(("//		Given the name of the object (from its pagename), this function will search through its"));
   O(("//	list of General Object Scripts for a script with a matching name (to see if there is a script"));
   O(("//	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID"));
   O(("//	is to be returned back to Descent 3.  This ID will be used from here on out for all future"));
diff --git a/grtext/textaux.cpp b/grtext/textaux.cpp
index 2f2b7de6..41ad8c27 100644
--- a/grtext/textaux.cpp
+++ b/grtext/textaux.cpp
@@ -39,7 +39,7 @@
  * added textaux_ClipString
  *
  * 2     7/14/98 11:53a Samir
- * moved textaux to it's own library again.
+ * moved textaux to its own library again.
  *
  * 1     7/13/98 4:41p Samir
  *
diff --git a/legacy/D3Launch/eax.h b/legacy/D3Launch/eax.h
index 0e691b25..aaca4f36 100644
--- a/legacy/D3Launch/eax.h
+++ b/legacy/D3Launch/eax.h
@@ -94,7 +94,7 @@ struct EAXBUFFER_REVERBPROPERTIES {
 #define EAX_REVERBMIX_USEDISTANCE                                                                                      \
   -1.0F // out of normal range
         // signifies the reverb engine should
-        // calculate it's own reverb mix value
+        // calculate its own reverb mix value
         // based on distance
 
 #ifdef __cplusplus
diff --git a/legacy/powerball/powerball.h b/legacy/powerball/powerball.h
index c5bb576d..57522f71 100644
--- a/legacy/powerball/powerball.h
+++ b/legacy/powerball/powerball.h
@@ -22,7 +22,7 @@
 // DMFCApp Class
 //    This is the class you actually make an instance of.
 //    It will handle processing of events, calling defaults where needed, or calling your overrides
-//    To create an event handler override, add it's prototype to this class, and then define the function
+//    To create an event handler override, add its prototype to this class, and then define the function
 //    in your multiplayer source file.  See examples to do this.  The prototype must be exactly the same
 //    as it is in DMFCBase class.
 class DMFCApp : public DMFCBase {
@@ -118,7 +118,7 @@ void DLLFUNCCALL DLLGameCall(int eventnum, dllinfo *data) {
 
 //	GetGOScriptID
 //	Purpose:
-//		Given the name of the object (from it's pagename), this function will search through it's
+//		Given the name of the object (from its pagename), this function will search through its
 //	list of General Object Scripts for a script with a matching name (to see if there is a script
 //	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID
 //	is to be returned back to Descent 3.  This ID will be used from here on out for all future
diff --git a/lib/polymodel_external.h b/lib/polymodel_external.h
index 75ddff3c..cfe1a488 100644
--- a/lib/polymodel_external.h
+++ b/lib/polymodel_external.h
@@ -81,10 +81,10 @@
 #define SOF_TURRET 0x02    // This subobject is a turret that tracks
 #define SOF_SHELL 0x04     // This subobject is a door housing
 #define SOF_FRONTFACE 0x08 // This subobject contains the front face for the door
-#define SOF_MONITOR1 0x010 // This subobject contains it's first monitor
-#define SOF_MONITOR2 0x020 // This subobject contains it's second monitor
-#define SOF_MONITOR3 0x040 // This subobject contains it's third monitor
-#define SOF_MONITOR4 0x080 // This subobject contains it's fourth monitor
+#define SOF_MONITOR1 0x010 // This subobject contains its first monitor
+#define SOF_MONITOR2 0x020 // This subobject contains its second monitor
+#define SOF_MONITOR3 0x040 // This subobject contains its third monitor
+#define SOF_MONITOR4 0x080 // This subobject contains its fourth monitor
 #define SOF_MONITOR5 0x0100
 #define SOF_MONITOR6 0x0200
 #define SOF_MONITOR7 0x0400
diff --git a/lib/textaux.h b/lib/textaux.h
index b6e0ca00..38d5f640 100644
--- a/lib/textaux.h
+++ b/lib/textaux.h
@@ -33,7 +33,7 @@
  * added textaux_ClipString
  *
  * 2     7/14/98 11:53a Samir
- * moved textaux to it's own library again.
+ * moved textaux to its own library again.
  *
  * 1     7/13/98 4:41p Samir
  *
diff --git a/lib/win/DirectX/dinput.h b/lib/win/DirectX/dinput.h
index 5aac2563..f54b1520 100644
--- a/lib/win/DirectX/dinput.h
+++ b/lib/win/DirectX/dinput.h
@@ -4356,7 +4356,7 @@ typedef void (WINAPI* LPFNSHOWJOYCPL)( HWND hWnd );
 /*
  * Hardware Setting indicating that VJoyD should not load this
  * driver, it will be loaded externally and will register with
- * VJoyD of it's own accord.
+ * VJoyD of its own accord.
  */
 #define JOY_HWS_AUTOLOAD            0x10000000l
 
diff --git a/linux/lnxcon_raw.cpp b/linux/lnxcon_raw.cpp
index ae846013..88ceac4e 100644
--- a/linux/lnxcon_raw.cpp
+++ b/linux/lnxcon_raw.cpp
@@ -49,7 +49,7 @@
 
 static char *Con_raw_read_buf = nullptr; // The next buffer of text from user input
 static char *Con_raw_inp_buf = nullptr,
-            Con_raw_inp_pos = 0;                     // Currently updating input buffer of text (and it's position)
+            Con_raw_inp_pos = 0;                     // Currently updating input buffer of text (and its position)
 static char Con_raw_last_command[CON_MAX_STRINGLEN]; // The last command entered by the user
 static int Con_raw_cols = 0, Con_raw_rows = 0;       // The size of the main window (input window is (1 row, Con_cols))
 
diff --git a/netcon/includes/con_dll.h b/netcon/includes/con_dll.h
index fe4f73b9..94c81df8 100644
--- a/netcon/includes/con_dll.h
+++ b/netcon/includes/con_dll.h
@@ -582,7 +582,7 @@ dp_GetModemChoices_fp DLLdp_GetModemChoices;
 typedef bool (*CreateStringTable_fp)(const char *filename, char ***table, int *size);
 CreateStringTable_fp DLLCreateStringTable;
 
-// Given a string table and it's count of strings, it will free up it's memory
+// Given a string table and its count of strings, it will free up its memory
 typedef void (*DestroyStringTable_fp)(char **table, int size);
 DestroyStringTable_fp DLLDestroyStringTable;
 
diff --git a/netgames/anarchy/Anarchy.h b/netgames/anarchy/Anarchy.h
index 8c21282f..f5be6e47 100644
--- a/netgames/anarchy/Anarchy.h
+++ b/netgames/anarchy/Anarchy.h
@@ -101,7 +101,7 @@ void DLLFUNCCALL DLLGameCall(int eventnum, dllinfo *data) {
 
 //	GetGOScriptID
 //	Purpose:
-//		Given the name of the object (from it's pagename), this function will search through it's
+//		Given the name of the object (from its pagename), this function will search through its
 //	list of General Object Scripts for a script with a matching name (to see if there is a script
 //	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID
 //	is to be returned back to Descent 3.  This ID will be used from here on out for all future
diff --git a/netgames/coop/coop.h b/netgames/coop/coop.h
index 162c7e1c..4c2c3648 100644
--- a/netgames/coop/coop.h
+++ b/netgames/coop/coop.h
@@ -110,7 +110,7 @@ void DLLFUNCCALL DLLGameCall(int eventnum, dllinfo *data) {
 
 //	GetGOScriptID
 //	Purpose:
-//		Given the name of the object (from it's pagename), this function will search through it's
+//		Given the name of the object (from its pagename), this function will search through its
 //	list of General Object Scripts for a script with a matching name (to see if there is a script
 //	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID
 //	is to be returned back to Descent 3.  This ID will be used from here on out for all future
diff --git a/netgames/ctf/ctf.cpp b/netgames/ctf/ctf.cpp
index f79ad1e0..ce558f9b 100644
--- a/netgames/ctf/ctf.cpp
+++ b/netgames/ctf/ctf.cpp
@@ -906,7 +906,7 @@ void OnClientCollide(uint8_t *data) {
             LoseFlagForPlayer(pnum, i);
 
             if (DMFCBase->GetLocalRole() == LR_SERVER) {
-              // if we are the server create the object and send it on it's way to the player's
+              // if we are the server, create the object and send it on its way to the players
               DLLComputeRoomCenter(&fpos, &dRooms[groom]);
               int objnum = DLLObjCreate(OBJ_POWERUP, FlagIDs[i], groom, &fpos, NULL, OBJECT_HANDLE_NONE);
               DLLMultiSendObject(&dObjects[objnum], 1, true);
diff --git a/netgames/ctf/ctf.h b/netgames/ctf/ctf.h
index cb03211b..f605a115 100644
--- a/netgames/ctf/ctf.h
+++ b/netgames/ctf/ctf.h
@@ -87,7 +87,7 @@ void DLLFUNCCALL DLLGameCall(int eventnum, dllinfo *data) {
 
 //	GetGOScriptID
 //	Purpose:
-//		Given the name of the object (from it's pagename), this function will search through it's
+//		Given the name of the object (from its pagename), this function will search through its
 //	list of General Object Scripts for a script with a matching name (to see if there is a script
 //	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID
 //	is to be returned back to Descent 3.  This ID will be used from here on out for all future
diff --git a/netgames/dmfc/dmfcbase.cpp b/netgames/dmfc/dmfcbase.cpp
index 03733fb0..4e88d857 100644
--- a/netgames/dmfc/dmfcbase.cpp
+++ b/netgames/dmfc/dmfcbase.cpp
@@ -1876,7 +1876,7 @@ bool DMFCBase::GetScoreLimit(int *limit) {
 // DMFCBase::AutoTimeLimit
 //
 //    Server Only.  This turns off or on the automatic level ending by DMFC of a timed multiplayer game.
-//    If you turn it off, it is your responsibility to end a time multiplayer game when it's time
+//    If you turn it off, it is your responsibility to end a time multiplayer game when its time
 //    is up.  If it is turned on, DMFC will automatically handle ending the game.  By default it is on.
 void DMFCBase::AutoTimeLimit(bool turnon) {
   if (GetLocalRole() != LR_SERVER)
@@ -2536,7 +2536,7 @@ bool DMFCBase::ShouldIDisplayHUDName(int pnum) {
 // DMFCBase::GetCounterMeasureOwner
 //
 //
-//	Given a counter measure it will determine the pnum of it's owner...if it can't find it, it returns -1
+//	Given a counter measure it will determine the pnum of its owner...if it can't find it, it returns -1
 int DMFCBase::GetCounterMeasureOwner(object *robot) {
   if (!robot)
     return -1;
@@ -5535,7 +5535,7 @@ int DMFCBase::GetCameraViewType(int window) {
 }
 
 // Given a generic object (OBJ_POWERUP,OBJ_ROBOT,OBJ_BUILDING or OBJ_CLUTTER) id
-// in the range of 0 to MAX_OBJECT_IDS, this returns a pointer to it's information (see objinfo.h)
+// in the range of 0 to MAX_OBJECT_IDS, this returns a pointer to its information (see objinfo.h)
 //	It returns NULL if an invalid id is given (or it's not used)
 object_info *DMFCBase::GetObjectInfo(int objinfo_id) {
   if (objinfo_id < 0 || objinfo_id >= MAX_OBJECT_IDS)
diff --git a/netgames/dmfc/dmfcinternal.h b/netgames/dmfc/dmfcinternal.h
index eba71aa1..4ea01aab 100644
--- a/netgames/dmfc/dmfcinternal.h
+++ b/netgames/dmfc/dmfcinternal.h
@@ -1068,7 +1068,7 @@ public:
   // DMFCBase::AutoTimeLimit
   //
   //    Server Only.  This turns off or on the automatic level ending by DMFC of a timed multiplayer game.
-  //    If you turn it off, it is your responsibility to end a time multiplayer game when it's time
+  //    If you turn it off, it is your responsibility to end a time multiplayer game when its time
   //    is up.  If it is turned on, DMFC will automatically handle ending the game.  By default it is on.
   void AutoTimeLimit(bool turnon);
 
@@ -1114,7 +1114,7 @@ public:
 
   // DMFCBase::RegisterPacketReceiver
   //
-  // Sets up a handler for a Special Packet ID.  When a special packet is recieved it's ID is compared
+  // Sets up a handler for a Special Packet ID.  When a special packet is recieved, its ID is compared
   // to the ID's given to this function.  If any match than it calls the handler given to process
   // the packet.
   // id = ID of the packet
@@ -1338,7 +1338,7 @@ public:
   // DMFCBase::GetCounterMeasureOwner
   //
   //
-  //	Given a counter measure it will determine the pnum of it's owner...if it can't find it, it returns -1
+  //	Given a counter measure it will determine the pnum of its owner...if it can't find it, it returns -1
   int GetCounterMeasureOwner(object *robot);
 
   // DMFCBase::CFGOpen
diff --git a/netgames/dmfc/dmfcmenu.cpp b/netgames/dmfc/dmfcmenu.cpp
index 9ab8a22d..617729ae 100644
--- a/netgames/dmfc/dmfcmenu.cpp
+++ b/netgames/dmfc/dmfcmenu.cpp
@@ -352,7 +352,7 @@ bool MenuItem::Forward(void) {
       }
       return true;
     }
-    // This submenu doesn't have input focus, so move to it's currently selected submenu and
+    // This submenu doesn't have input focus, so move to its currently selected submenu and
     // Tell it to go forward if it can
     if (CurrSubMenu != -1)
       return SubMenus[CurrSubMenu]->Forward();
@@ -370,7 +370,7 @@ bool MenuItem::Back(void) {
         HasInputFocus = true;
         return true;
       }
-      // The next submenu doesn't have focus, but one of it's submenus might (they better),
+      // The next submenu doesn't have focus, but one of its submenus might (they better),
       // so move on to the next submenu and call Back()
       return SubMenus[CurrSubMenu]->Back();
     }
@@ -413,17 +413,17 @@ void MenuItem::Execute(void) {
   switch (m_cType) {
   case MIT_NORMAL: {
     // We need to go through the Submenus and check to see if the submenu has focus
-    // if it does, than we need to execute it's function
+    // if it does, than we need to execute its function
     if (SubMenuCount > 0) {
       if (CurrSubMenu != -1) {
         if (HasInputFocus) {
-          // The submenu has focus, so call it's handler as long as it's not a plist type
+          // The submenu has focus, so call its handler as long as it's not a plist type
           char type = SubMenus[CurrSubMenu]->GetType();
           if ((type != MIT_PLIST) && (type != MIT_STATE) && (type != MIT_CUSTOM))
             SubMenus[CurrSubMenu]->CallFunc(CurrSubMenu);
           return;
         }
-        // The next submenu doesn't have focus, so move on and check it's submenu to see if we
+        // The next submenu doesn't have focus, so move on and check its submenu to see if we
         // can Execute() that
         SubMenus[CurrSubMenu]->Execute();
       }
@@ -434,7 +434,7 @@ void MenuItem::Execute(void) {
   } break;
   case MIT_PLIST: {
     // We need to go through the Submenus and check to see if the submenu has focus
-    // if it does, than we need to execute it's function
+    // if it does, than we need to execute its function
     if ((SubMenuCount > 0) && (CurrSubMenu != -1) && (HasInputFocus)) {
       if (m_iFlags & MIF_INCLUDENONE) {
         // there is a <None> so take that into consideration
@@ -445,14 +445,14 @@ void MenuItem::Execute(void) {
         }
 
         if (basethis->CheckPlayerNum(Pnums[CurrSubMenu - 1])) {
-          // The submenu has focus, so call it's handler
+          // The submenu has focus, so call its handler
           CallFunc(Pnums[CurrSubMenu - 1]);
           return;
         }
       } else {
         // a regular plist
         if (basethis->CheckPlayerNum(Pnums[CurrSubMenu])) {
-          // The submenu has focus, so call it's handler
+          // The submenu has focus, so call its handler
           CallFunc(Pnums[CurrSubMenu]);
           return;
         }
@@ -461,12 +461,12 @@ void MenuItem::Execute(void) {
   } break;
   case MIT_CUSTOM: {
     // We need to go through the Submenus and check to see if the submenu has focus
-    // if it does, than we need to execute it's function
+    // if it does, than we need to execute its function
     int count = (m_cmInfo.GetListCount) ? (*m_cmInfo.GetListCount)() : 0;
     if (count > 0) {
       if (CurrSubMenu != -1) {
         if (HasInputFocus) {
-          // The submenu has focus, so call it's handler
+          // The submenu has focus, so call its handler
           CallFunc(CurrSubMenu);
           return;
         }
@@ -475,11 +475,11 @@ void MenuItem::Execute(void) {
   }
   case MIT_STATE: {
     // We need to go through the Submenus and check to see if the submenu has focus
-    // if it does, than we need to execute it's function
+    // if it does, than we need to execute its function
     if (SubMenuCount > 0) {
       if (CurrSubMenu != -1) {
         if (HasInputFocus) {
-          // The submenu has focus, so call it's handler
+          // The submenu has focus, so call its handler
           CallFunc(CurrSubMenu);
           m_iState = CurrSubMenu;
           return;
@@ -810,7 +810,7 @@ void MenuItem::Draw(int x, int y, int height, int bmp, float *not_used) {
 }
 const char *MenuItem::GetTitle(void) { return m_sTitle; }
 void MenuItem::SetInputFocus(void) {
-  // Sets this MenuItem with Input focus, reseting it's Current Sub Menu to 0 if it has a SubMenu
+  // Sets this MenuItem with Input focus, reseting its Current Sub Menu to 0 if it has a SubMenu
   HasInputFocus = true;
   if (SubMenuCount > 0)
     CurrSubMenu = (m_iTopIndex == 0) ? 0 : m_iTopIndex + 1;
@@ -818,7 +818,7 @@ void MenuItem::SetInputFocus(void) {
     CurrSubMenu = -1;
 }
 void MenuItem::LoseInputFocus(void) {
-  // Make this guy lose focus, Set it's Current Submenu to -1
+  // Make this guy lose focus, Set its Current Submenu to -1
   HasInputFocus = false;
   CurrSubMenu = -1;
 }
diff --git a/netgames/dmfc/dmfcpackets.cpp b/netgames/dmfc/dmfcpackets.cpp
index 103997b7..1eabec8f 100644
--- a/netgames/dmfc/dmfcpackets.cpp
+++ b/netgames/dmfc/dmfcpackets.cpp
@@ -113,7 +113,7 @@
 
 // DMFCBase::RegisterPacketReceiver
 //
-// Sets up a handler for a Special Packet ID.  When a special packet is recieved it's ID is compared
+// Sets up a handler for a Special Packet ID.  When a special packet is recieved, its ID is compared
 // to the ID's given to this function.  If any match than it calls the handler given to process
 // the packet.
 // id = ID of the packet
@@ -214,7 +214,7 @@ void DMFCBase::SendPacket(uint8_t *data, int size, int destination) {
     return;
   }
 
-  // we can safely send this packet out to it's appropriate destination
+  // we can safely send this packet out to its appropriate destination
 
   // see if we are trying to send to the server, it's specially handled
   if (destination == SP_SERVER) {
diff --git a/netgames/entropy/Entropy.h b/netgames/entropy/Entropy.h
index 66444ad5..4fd455a9 100644
--- a/netgames/entropy/Entropy.h
+++ b/netgames/entropy/Entropy.h
@@ -98,7 +98,7 @@ void DLLFUNCCALL DLLGameCall(int eventnum, dllinfo *data) {
 
 //	GetGOScriptID
 //	Purpose:
-//		Given the name of the object (from it's pagename), this function will search through it's
+//		Given the name of the object (from its pagename), this function will search through its
 //	list of General Object Scripts for a script with a matching name (to see if there is a script
 //	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID
 //	is to be returned back to Descent 3.  This ID will be used from here on out for all future
diff --git a/netgames/hoard/Hoard.h b/netgames/hoard/Hoard.h
index cb5b504b..acdb656c 100644
--- a/netgames/hoard/Hoard.h
+++ b/netgames/hoard/Hoard.h
@@ -84,7 +84,7 @@ void DLLFUNCCALL DLLGameCall(int eventnum, dllinfo *data) {
 
 //	GetGOScriptID
 //	Purpose:
-//		Given the name of the object (from it's pagename), this function will search through it's
+//		Given the name of the object (from its pagename), this function will search through its
 //	list of General Object Scripts for a script with a matching name (to see if there is a script
 //	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID
 //	is to be returned back to Descent 3.  This ID will be used from here on out for all future
diff --git a/netgames/hyperanarchy/HyperAnarchy.h b/netgames/hyperanarchy/HyperAnarchy.h
index 70b5d1da..ba6c7ea6 100644
--- a/netgames/hyperanarchy/HyperAnarchy.h
+++ b/netgames/hyperanarchy/HyperAnarchy.h
@@ -76,7 +76,7 @@ void DLLFUNCCALL DLLGameCall(int eventnum, dllinfo *data) {
 
 //	GetGOScriptID
 //	Purpose:
-//		Given the name of the object (from it's pagename), this function will search through it's
+//		Given the name of the object (from its pagename), this function will search through its
 //	list of General Object Scripts for a script with a matching name (to see if there is a script
 //	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID
 //	is to be returned back to Descent 3.  This ID will be used from here on out for all future
diff --git a/netgames/hyperanarchy/hyperanarchy.cpp b/netgames/hyperanarchy/hyperanarchy.cpp
index df9c7954..7830b472 100644
--- a/netgames/hyperanarchy/hyperanarchy.cpp
+++ b/netgames/hyperanarchy/hyperanarchy.cpp
@@ -146,7 +146,7 @@ static void CreateHyperOrbInRoom(int room);
 static void MoveHyperOrbToRoomCenter(int objnum, int room);
 // handles a Hyper Anarchy Object Placement packet
 static void ReceiveHyperPos(uint8_t *data);
-// Searches through all the objects and looks for the HyperOrb, returns it's objnum. -1 if it doesn't exist
+// Searches through all the objects and looks for the HyperOrb, returns its objnum. -1 if it doesn't exist
 static int FindHyperObjectNum(void);
 // Searches through all the player's inventory, returns the pnum of the player who has the HyperOrb, -1
 // if no one does.
@@ -1443,7 +1443,7 @@ void ReceiveHyperPos(uint8_t *data) {
   MoveHyperOrbToRoomCenter(objnum, room);
 }
 
-// Searches through all the objects and looks for the HyperOrb, returns it's objnum. -1 if it doesn't exist
+// Searches through all the objects and looks for the HyperOrb, returns its objnum. -1 if it doesn't exist
 int FindHyperObjectNum(void) {
   // go through all the objects until we find it
   for (int i = 0; i < MAX_OBJECTS; i++) {
diff --git a/netgames/includes/gamedll_header.h b/netgames/includes/gamedll_header.h
index cd082ec8..b2758bab 100644
--- a/netgames/includes/gamedll_header.h
+++ b/netgames/includes/gamedll_header.h
@@ -526,7 +526,7 @@ DMFCDLLOUT(nw_GetThisIP_fp DLLnw_GetThisIP;)
 typedef bool (*CreateStringTable_fp)(const char *filename, char ***table, int *size);
 DMFCDLLOUT(CreateStringTable_fp DLLCreateStringTable;)
 
-// Given a string table and it's count of strings, it will free up it's memory
+// Given a string table and its count of strings, it will free up its memory
 typedef void (*DestroyStringTable_fp)(char **table, int size);
 DMFCDLLOUT(DestroyStringTable_fp DLLDestroyStringTable;)
 
@@ -1614,7 +1614,7 @@ typedef bool (*dInven_Add_fp)(Inventory *inven, int type, int id, object *parent
                               char *description);
 DMFCDLLOUT(dInven_Add_fp Inven_Add;)
 
-// adds an object to the inventory (marked by it's objhandle)
+// adds an object to the inventory (marked by its objhandle)
 // typedef bool (*dInven_AddObject_fp)(Inventory *inven,int object_handle,int flags=0,char *description=NULL);
 typedef bool (*dInven_AddObject_fp)(Inventory *inven, int object_handle, int flags, char *description);
 DMFCDLLOUT(dInven_AddObject_fp Inven_AddObject;)
@@ -1626,7 +1626,7 @@ typedef bool (*dInven_AddCounterMeasure_fp)(Inventory *inven, int id, int aux_ty
                                             char *description);
 DMFCDLLOUT(dInven_AddCounterMeasure_fp Inven_AddCounterMeasure;)
 
-//	removes an item from the inventory (reduces it's count by one...if there is no more, then it goes bye-bye)
+//	removes an item from the inventory (reduces its count by one...if there is no more, then it goes bye-bye)
 //	to remove an object that was added via objhandle, then pass the objhandle
 //	in the 'type' parameter, and don't pass in an id.
 // typedef bool (*dInven_Remove_fp)(Inventory *inven,int type,int id=-1);
@@ -1638,7 +1638,7 @@ DMFCDLLOUT(dInven_Remove_fp Inven_Remove;)
 typedef bool (*dInven_Use_fp)(Inventory *inven, int type, int id, object *parent);
 DMFCDLLOUT(dInven_Use_fp Inven_Use;)
 
-// uses an item in the inventory (given it's objhandle).
+// uses an item in the inventory (given its objhandle).
 // typedef bool (*dInven_UseObjHandle_fp)(Inventory *inven,int objhandle,object *parent=NULL);
 typedef bool (*dInven_UseObjHandle_fp)(Inventory *inven, int objhandle, object *parent);
 DMFCDLLOUT(dInven_UseObjHandle_fp Inven_UseObjHandle;)
@@ -1723,7 +1723,7 @@ DMFCDLLOUT(dInven_AtEnd_fp Inven_AtEnd;)
 typedef void (*dInven_GotoPos_fp)(Inventory *inven, int newpos);
 DMFCDLLOUT(dInven_GotoPos_fp Inven_GotoPos;)
 
-// jump right to an item in the inventory give it's type and id
+// jump right to an item in the inventory give its type and id
 // to jump to an item that was added via object handle, pass the object
 // handle in as the type, and make id -1.
 typedef void (*dInven_GotoPosTypeID_fp)(Inventory *inven, int type, int id);
diff --git a/netgames/includes/idmfc.h b/netgames/includes/idmfc.h
index 183287b1..3db48669 100644
--- a/netgames/includes/idmfc.h
+++ b/netgames/includes/idmfc.h
@@ -672,7 +672,7 @@ public:
   // DMFCBase::AutoTimeLimit
   //
   //    Server Only.  This turns off or on the automatic level ending by DMFC of a timed multiplayer game.
-  //    If you turn it off, it is your responsibility to end a time multiplayer game when it's time
+  //    If you turn it off, it is your responsibility to end a time multiplayer game when its time
   //    is up.  If it is turned on, DMFC will automatically handle ending the game.  By default it is on.
   virtual void AutoTimeLimit(bool turnon) = 0;
 
@@ -718,7 +718,7 @@ public:
 
   // DMFCBase::RegisterPacketReceiver
   //
-  // Sets up a handler for a Special Packet ID.  When a special packet is recieved it's ID is compared
+  // Sets up a handler for a Special Packet ID.  When a special packet is recieved, its ID is compared
   // to the ID's given to this function.  If any match than it calls the handler given to process
   // the packet.
   // id = ID of the packet
@@ -922,7 +922,7 @@ public:
   // DMFCBase::GetCounterMeasureOwner
   //
   //
-  //	Given a counter measure it will determine the pnum of it's owner...if it can't find it, it returns -1
+  //	Given a counter measure it will determine the pnum of its owner...if it can't find it, it returns -1
   virtual int GetCounterMeasureOwner(object *robot) = 0;
 
   // DMFCBase::CFGOpen
@@ -1644,7 +1644,7 @@ public:
   // returns the current state of the camera window
   virtual int GetCameraViewType(int window) = 0;
   // Given a generic object (OBJ_POWERUP,OBJ_ROBOT,OBJ_BUILDING or OBJ_CLUTTER) id
-  // in the range of 0 to MAX_OBJECT_IDS, this returns a pointer to it's information (see objinfo.h)
+  // in the range of 0 to MAX_OBJECT_IDS, this returns a pointer to its information (see objinfo.h)
   //	It returns NULL if an invalid id is given (or it's not used)
   virtual object_info *GetObjectInfo(int objinfo_id) = 0;
   virtual ~IDMFC() = default;
diff --git a/netgames/monsterball/monsterball.h b/netgames/monsterball/monsterball.h
index 9161d69c..8620c339 100644
--- a/netgames/monsterball/monsterball.h
+++ b/netgames/monsterball/monsterball.h
@@ -107,7 +107,7 @@ void DLLFUNCCALL DLLGameCall(int eventnum, dllinfo *data) {
 
 //	GetGOScriptID
 //	Purpose:
-//		Given the name of the object (from it's pagename), this function will search through it's
+//		Given the name of the object (from its pagename), this function will search through its
 //	list of General Object Scripts for a script with a matching name (to see if there is a script
 //	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID
 //	is to be returned back to Descent 3.  This ID will be used from here on out for all future
diff --git a/netgames/roboanarchy/roboAnarchy.h b/netgames/roboanarchy/roboAnarchy.h
index 31aef00a..8ec50df0 100644
--- a/netgames/roboanarchy/roboAnarchy.h
+++ b/netgames/roboanarchy/roboAnarchy.h
@@ -101,7 +101,7 @@ void DLLFUNCCALL DLLGameCall(int eventnum, dllinfo *data) {
 
 //	GetGOScriptID
 //	Purpose:
-//		Given the name of the object (from it's pagename), this function will search through it's
+//		Given the name of the object (from its pagename), this function will search through its
 //	list of General Object Scripts for a script with a matching name (to see if there is a script
 //	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID
 //	is to be returned back to Descent 3.  This ID will be used from here on out for all future
diff --git a/netgames/tanarchy/tanDMFC.h b/netgames/tanarchy/tanDMFC.h
index 432c2eb8..dcb56cb2 100644
--- a/netgames/tanarchy/tanDMFC.h
+++ b/netgames/tanarchy/tanDMFC.h
@@ -63,7 +63,7 @@ void DLLFUNCCALL DLLGameCall(int eventnum, dllinfo *data) {
 
 //	GetGOScriptID
 //	Purpose:
-//		Given the name of the object (from it's pagename), this function will search through it's
+//		Given the name of the object (from its pagename), this function will search through its
 //	list of General Object Scripts for a script with a matching name (to see if there is a script
 //	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID
 //	is to be returned back to Descent 3.  This ID will be used from here on out for all future
diff --git a/networking/networking.cpp b/networking/networking.cpp
index 4c1386ef..4e89bc2e 100644
--- a/networking/networking.cpp
+++ b/networking/networking.cpp
@@ -1772,7 +1772,7 @@ int nw_Compress(void *srcdata, void *destdata, int count) {
   uint8_t *curr_src = (uint8_t *)srcdata;
   uint8_t *currp = (uint8_t *)destdata;
   for (i = 0; i < count; i++) {
-    // Woops, we have a char that matches our compress key, so add it as it's own type
+    // Woops, we have a char that matches our compress key, so add it as its own type
     if (curr_src[i] == COMPRESS_KEY) {
       *currp = COMPRESS_KEY;
       currp++;
diff --git a/physics/findintersection.cpp b/physics/findintersection.cpp
index 9422f2ff..32196668 100644
--- a/physics/findintersection.cpp
+++ b/physics/findintersection.cpp
@@ -1165,7 +1165,7 @@ uint32_t check_point_to_face(vector *colp, vector *face_normal, int nv, vector *
   return edgemask;
 }
 
-// decide it it's close enough to hit
+// decide if it's close enough to hit
 // determine if and where a vector intersects with a sphere
 // vector defined by p0,p1
 // if there is an intersection this function returns 1, fills in intp, and col_dist else it returns 0
@@ -1546,7 +1546,7 @@ float rad, vector *ep0, vector *ep1)
                         end_pnt = *p1;
                 }
 
-        // decide it it's close enough to hit
+        // decide if it's close enough to hit
         // determine if and where a vector intersects with a sphere
         // vector defined by p0,p1
         // if there is an intersection this function returns 1, fills in intp, and col_dist else it returns 0
diff --git a/scripts/AIGame3.cpp b/scripts/AIGame3.cpp
index c66565a5..c9a6bc15 100644
--- a/scripts/AIGame3.cpp
+++ b/scripts/AIGame3.cpp
@@ -1517,7 +1517,7 @@ void STDCALL ShutdownDLL(void) {}
 
 //	GetGOScriptID
 //	Purpose:
-//		Given the name of the object (from it's pagename), this function will search through it's
+//		Given the name of the object (from its pagename), this function will search through its
 //	list of General Object Scripts for a script with a matching name (to see if there is a script
 //	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID
 //	is to be returned back to Descent 3.  This ID will be used from here on out for all future
@@ -1751,7 +1751,7 @@ bool AlienOrganism::ReceiveCommand(int me, int it, char command, void *ptr) {
     }
   } break;
 
-  // Squadie is asking for it's formation position
+  // Squadie is asking for its formation position
   case ALIEN_COM_GET_GOAL_POS: {
     int tm_id = FindTeammateID(it);
     if (tm_id >= 0) {
@@ -1760,7 +1760,7 @@ bool AlienOrganism::ReceiveCommand(int me, int it, char command, void *ptr) {
     }
   } break;
 
-  // Squadie is asking for it's formation goal room
+  // Squadie is asking for its formation goal room
   case ALIEN_COM_GET_GOAL_ROOM: {
     Obj_Value(me, VF_GET, OBJV_I_ROOMNUM, (int *)ptr);
     return true;
@@ -6953,7 +6953,7 @@ int16_t AlienBoss::CallEvent(int event, tOSIRISEventInfo *data) {
   case EVT_DAMAGED: {
     DoDamage(data->me_handle, &data->evt_damaged);
 
-    // If boss is slightly damaged, restore it's hitpoints (so it can never die!)
+    // If boss is slightly damaged, restore its hitpoints (so it can never die!)
     float curr_shields;
     Obj_Value(data->me_handle, VF_GET, OBJV_F_SHIELDS, &curr_shields);
     if (curr_shields < memory->base_shields * 0.75f) {
diff --git a/scripts/DallasFuncs.cpp b/scripts/DallasFuncs.cpp
index 8e502e96..379d71b5 100644
--- a/scripts/DallasFuncs.cpp
+++ b/scripts/DallasFuncs.cpp
@@ -4215,7 +4215,7 @@ Mission
 Enable the given ship [a:Ship], so it can be chosen in single player
 aEnableShip
 EnableShip
-        Enables a ship (given it's name) so it can be chosen in
+        Enables a ship (given its name) so it can be chosen in
 single player ship selection dialog.
 
 Parameters:
@@ -4234,7 +4234,7 @@ Mission
 Disable the given ship [a:Ship], so it can't be chosen in single player
 aDisableShip
 DisableShip
-        Disables a ship (given it's name) so it can't be chosen in
+        Disables a ship (given its name) so it can't be chosen in
 single player ship selection dialog.
 
 Parameters:
diff --git a/scripts/aigame2.cpp b/scripts/aigame2.cpp
index dc3c2d81..70b015f6 100644
--- a/scripts/aigame2.cpp
+++ b/scripts/aigame2.cpp
@@ -280,7 +280,7 @@ void STDCALL ShutdownDLL(void) {}
 
 //	GetGOScriptID
 //	Purpose:
-//		Given the name of the object (from it's pagename), this function will search through it's
+//		Given the name of the object (from its pagename), this function will search through its
 //	list of General Object Scripts for a script with a matching name (to see if there is a script
 //	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID
 //	is to be returned back to Descent 3.  This ID will be used from here on out for all future
diff --git a/scripts/clutter.cpp b/scripts/clutter.cpp
index dda39cf6..bdf516b3 100644
--- a/scripts/clutter.cpp
+++ b/scripts/clutter.cpp
@@ -162,7 +162,7 @@ void STDCALL ShutdownDLL(void) {}
 
 //	GetGOScriptID
 //	Purpose:
-//		Given the name of the object (from it's pagename), this function will search through it's
+//		Given the name of the object (from its pagename), this function will search through its
 //	list of General Object Scripts for a script with a matching name (to see if there is a script
 //	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID
 //	is to be returned back to Descent 3.  This ID will be used from here on out for all future
diff --git a/scripts/generic.cpp b/scripts/generic.cpp
index 2a93bda5..291621a0 100644
--- a/scripts/generic.cpp
+++ b/scripts/generic.cpp
@@ -174,7 +174,7 @@ void STDCALL ShutdownDLL(void) {}
 
 //	GetGOScriptID
 //	Purpose:
-//		Given the name of the object (from it's pagename), this function will search through it's
+//		Given the name of the object (from its pagename), this function will search through its
 //	list of General Object Scripts for a script with a matching name (to see if there is a script
 //	for that type/id of object within this DLL).  If a matching scriptname is found, a UNIQUE ID
 //	is to be returned back to Descent 3.  This ID will be used from here on out for all future
diff --git a/scripts/lnx/osiris_common.h b/scripts/lnx/osiris_common.h
index 6e3e6bbc..aaf78f51 100644
--- a/scripts/lnx/osiris_common.h
+++ b/scripts/lnx/osiris_common.h
@@ -372,11 +372,11 @@
 #define EVT_LEVELSTART EVT_CREATED //
 #define EVT_LEVELEND EVT_DESTROY   // called when level is started and ended.
 #define EVT_CHANGESEG 0x115        // called when object changes room
-#define EVT_SAVESTATE 0x117        // called when the script should save it's state
-#define EVT_RESTORESTATE 0x118     // called when the script should restore it's state
+#define EVT_SAVESTATE 0x117        // called when the script should save its state
+#define EVT_RESTORESTATE 0x118     // called when the script should restore its state
 #define EVT_MEMRESTORE                                                                                                 \
   0x119 // called when the script should restore a pointer to the special auto-save memory it allocated
-#define EVT_TIMERCANCEL 0x11A // called when a timer is canceled (either by function call or from it's object detonator)
+#define EVT_TIMERCANCEL 0x11A // called when a timer is canceled (either by function call or from its object detonator)
 #define EVT_AIN_OBJKILLED 0x11B          // child event of EVT_AI_NOTIFY
 #define EVT_AIN_SEEPLAYER 0x11C          // child event of EVT_AI_NOTIFY
 #define EVT_AIN_WHITOBJECT 0x11D         // child event of EVT_AI_NOTIFY
diff --git a/scripts/lnx/osiris_import.h b/scripts/lnx/osiris_import.h
index 47a99b52..610fa076 100644
--- a/scripts/lnx/osiris_import.h
+++ b/scripts/lnx/osiris_import.h
@@ -57,12 +57,12 @@ typedef void (*Sound_TouchFile_fp)(char *sound_name);
 OSIRISEXTERN Sound_TouchFile_fp Sound_TouchFile;
 
 //	int Obj_FindID(const char *object_name);
-//	searches for an object id given it's name
+//	searches for an object id given its name
 typedef int (*Obj_FindID_fp)(const char *object_name);
 OSIRISEXTERN Obj_FindID_fp Obj_FindID;
 
 //	int Obj_FindType(const char *object_name);
-//	searches for an object type given it's name
+//	searches for an object type given its name
 typedef int (*Obj_FindType_fp)(const char *object_name);
 OSIRISEXTERN Obj_FindType_fp Obj_FindType;
 
@@ -122,12 +122,12 @@ typedef int (*Obj_AttachObjectRad_fp)(int parenthandle, char parent_ap, int chil
 OSIRISEXTERN Obj_AttachObjectRad_fp Obj_AttachObjectRad;
 
 //	void Obj_UnattachFromParent(int objhandle);
-//	Detaches an object from it's parent
+//	Detaches an object from its parent
 typedef void (*Obj_UnattachFromParent_fp)(int objhandle);
 OSIRISEXTERN Obj_UnattachFromParent_fp Obj_UnattachFromParent;
 
 //	void Obj_UnattachChild(int objhandle,char parent_ap);
-//	Detaches a child object from it's parent
+//	Detaches a child object from its parent
 typedef void (*Obj_UnattachChild_fp)(int objhandle, char parent_ap);
 OSIRISEXTERN Obj_UnattachChild_fp Obj_UnattachChild;
 
@@ -137,7 +137,7 @@ typedef void (*Obj_UnattachChildren_fp)(int objhandle);
 OSIRISEXTERN Obj_UnattachChildren_fp Obj_UnattachChildren;
 
 //	int FVI_RayCast(int objhandle,vector *p0,vector *p1,int start_roomnum,float rad,int flags,ray_info *ri);
-//	Shoots out a ray, returns it's fate
+//	Shoots out a ray, returns its fate
 typedef int (*FVI_RayCast_fp)(int objhandle, vector *p0, vector *p1, int start_roomnum, float rad, int flags,
                               ray_info *ri);
 OSIRISEXTERN FVI_RayCast_fp FVI_RayCast;
@@ -341,7 +341,7 @@ typedef void (*Scrpt_MemFree_fp)(void *memory_ptr);
 OSIRISEXTERN Scrpt_MemFree_fp Scrpt_MemFree;
 
 //	void Scrpt_CancelTimer(int timer_id);
-//		Cancels a timer thats in use, given it's ID
+//		Cancels a timer thats in use, given its ID
 typedef void (*Scrpt_CancelTimer_fp)(int timer_id);
 OSIRISEXTERN Scrpt_CancelTimer_fp Scrpt_CancelTimer;
 
@@ -503,7 +503,7 @@ OSIRISEXTERN OMMS_Free_fp OMMS_Free;
 typedef OMMSHANDLE (*OMMS_Find_fp)(uint32_t unique_identifier, char *script_identifier);
 OSIRISEXTERN OMMS_Find_fp OMMS_Find;
 
-//	Returns information about the OMMS memory given it's handle returned from the OMMS_Find() or
+//	Returns information about the OMMS memory given its handle returned from the OMMS_Find() or
 //	OMMS_Malloc(). Returns 0 if the handle was invalid, 1 if the information has been filled in;
 //	Pass NULL in for those parameters you don't need information about.
 typedef char (*OMMS_GetInfo_fp)(OMMSHANDLE handle, uint32_t *mem_size, uint32_t *uid, uint16_t *reference_count,
@@ -615,7 +615,7 @@ typedef int (*Game_GetLanguage_fp)(void);
 OSIRISEXTERN Game_GetLanguage_fp Game_GetLanguage;
 
 // Sets/Gets information about a path.
-// If you change is PV_ALL (or any of it's individual components), pass in a pointer to an
+// If you change is PV_ALL (or any of its individual components), pass in a pointer to an
 // osiris_path_node_info struct.  For the others, you must pass in an appropriate pointer
 // (i.e. an int* for PV_I_NUMNODES).  You can only set PV_ALL components.
 //	for PV_I_NUMNODES, path_id MUST be specified, node_id is ignored
diff --git a/scripts/osiris_common.h b/scripts/osiris_common.h
index d7efb6e0..c6a53f2f 100644
--- a/scripts/osiris_common.h
+++ b/scripts/osiris_common.h
@@ -373,11 +373,11 @@
 #define EVT_LEVELSTART EVT_CREATED //
 #define EVT_LEVELEND EVT_DESTROY   // called when level is started and ended.
 #define EVT_CHANGESEG 0x115        // called when object changes room
-#define EVT_SAVESTATE 0x117        // called when the script should save it's state
-#define EVT_RESTORESTATE 0x118     // called when the script should restore it's state
+#define EVT_SAVESTATE 0x117        // called when the script should save its state
+#define EVT_RESTORESTATE 0x118     // called when the script should restore its state
 #define EVT_MEMRESTORE                                                                                                 \
   0x119 // called when the script should restore a pointer to the special auto-save memory it allocated
-#define EVT_TIMERCANCEL 0x11A // called when a timer is canceled (either by function call or from it's object detonator)
+#define EVT_TIMERCANCEL 0x11A // called when a timer is canceled (either by function call or from its object detonator)
 #define EVT_AIN_OBJKILLED 0x11B          // child event of EVT_AI_NOTIFY
 #define EVT_AIN_SEEPLAYER 0x11C          // child event of EVT_AI_NOTIFY
 #define EVT_AIN_WHITOBJECT 0x11D         // child event of EVT_AI_NOTIFY
diff --git a/scripts/osiris_import.h b/scripts/osiris_import.h
index 09959c7d..1087b56b 100644
--- a/scripts/osiris_import.h
+++ b/scripts/osiris_import.h
@@ -61,12 +61,12 @@ typedef void (*Sound_TouchFile_fp)(char *sound_name);
 OSIRISEXTERN Sound_TouchFile_fp Sound_TouchFile;
 
 //	int Obj_FindID(const char *object_name);
-//	searches for an object id given it's name
+//	searches for an object id given its name
 typedef int (*Obj_FindID_fp)(const char *object_name);
 OSIRISEXTERN Obj_FindID_fp Obj_FindID;
 
 //	int Obj_FindType(const char *object_name);
-//	searches for an object type given it's name
+//	searches for an object type given its name
 typedef int (*Obj_FindType_fp)(const char *object_name);
 OSIRISEXTERN Obj_FindType_fp Obj_FindType;
 
@@ -138,12 +138,12 @@ typedef int (*Obj_AttachObjectRad_fp)(int parenthandle, char parent_ap, int chil
 OSIRISEXTERN Obj_AttachObjectRad_fp Obj_AttachObjectRad;
 
 //	void Obj_UnattachFromParent(int objhandle);
-//	Detaches an object from it's parent
+//	Detaches an object from its parent
 typedef void (*Obj_UnattachFromParent_fp)(int objhandle);
 OSIRISEXTERN Obj_UnattachFromParent_fp Obj_UnattachFromParent;
 
 //	void Obj_UnattachChild(int objhandle,char parent_ap);
-//	Detaches a child object from it's parent
+//	Detaches a child object from its parent
 typedef void (*Obj_UnattachChild_fp)(int objhandle, char parent_ap);
 OSIRISEXTERN Obj_UnattachChild_fp Obj_UnattachChild;
 
@@ -153,7 +153,7 @@ typedef void (*Obj_UnattachChildren_fp)(int objhandle);
 OSIRISEXTERN Obj_UnattachChildren_fp Obj_UnattachChildren;
 
 //	int FVI_RayCast(int objhandle,vector *p0,vector *p1,int start_roomnum,float rad,int flags,ray_info *ri);
-//	Shoots out a ray, returns it's fate
+//	Shoots out a ray, returns its fate
 typedef int (*FVI_RayCast_fp)(int objhandle, vector *p0, vector *p1, int start_roomnum, float rad, int flags,
                               ray_info *ri);
 OSIRISEXTERN FVI_RayCast_fp FVI_RayCast;
@@ -369,7 +369,7 @@ typedef void (*Scrpt_MemFree_fp)(void *memory_ptr);
 OSIRISEXTERN Scrpt_MemFree_fp Scrpt_MemFree;
 
 //	void Scrpt_CancelTimer(int timer_id);
-//		Cancels a timer thats in use, given it's ID
+//		Cancels a timer thats in use, given its ID
 typedef void (*Scrpt_CancelTimer_fp)(int timer_id);
 OSIRISEXTERN Scrpt_CancelTimer_fp Scrpt_CancelTimer;
 
@@ -563,7 +563,7 @@ OSIRISEXTERN OMMS_Free_fp OMMS_Free;
 typedef OMMSHANDLE (*OMMS_Find_fp)(uint32_t unique_identifier, char *script_identifier);
 OSIRISEXTERN OMMS_Find_fp OMMS_Find;
 
-//	Returns information about the OMMS memory given it's handle returned from the OMMS_Find() or
+//	Returns information about the OMMS memory given its handle returned from the OMMS_Find() or
 //	OMMS_Malloc(). Returns 0 if the handle was invalid, 1 if the information has been filled in;
 //	Pass NULL in for those parameters you don't need information about.
 typedef char (*OMMS_GetInfo_fp)(OMMSHANDLE handle, uint32_t *mem_size, uint32_t *uid, uint16_t *reference_count,
@@ -684,7 +684,7 @@ typedef int (*Game_GetLanguage_fp)(void);
 OSIRISEXTERN Game_GetLanguage_fp Game_GetLanguage;
 
 // Sets/Gets information about a path.
-// If you change is PV_ALL (or any of it's individual components), pass in a pointer to an
+// If you change is PV_ALL (or any of its individual components), pass in a pointer to an
 // osiris_path_node_info struct.  For the others, you must pass in an appropriate pointer
 // (i.e. an int* for PV_I_NUMNODES).  You can only set PV_ALL components.
 //	for PV_I_NUMNODES, path_id MUST be specified, node_id is ignored