diff --git a/code/client/cl_invrender.cpp b/code/client/cl_invrender.cpp
index 03830c3b..73f060cb 100644
--- a/code/client/cl_invrender.cpp
+++ b/code/client/cl_invrender.cpp
@@ -164,7 +164,7 @@ void CL_Draw3DModel(
                 iUpdateTime[iCurrNum] = cls.realtime;
 
                 if (TIKI_Anim_Time(ent.tiki, iIndex[iCurrNum]) < fAnimTime[iCurrNum]) {
-                    // Added in 2.0
+                    // Added in 2.11
                     //  Clear tunak easter egg
                     Cvar_Set("tunak", "0");
                     iIndex[iCurrNum] = -1;
diff --git a/code/fgame/Entities.h b/code/fgame/Entities.h
index 16ed9600..bb4fa475 100644
--- a/code/fgame/Entities.h
+++ b/code/fgame/Entities.h
@@ -362,6 +362,9 @@ public:
     void Killed(Event* ev) override;
 };
 
+//
+// Added in 2.30
+//
 class AISpawnPoint : public SimpleArchivedEntity
 {
 private:
diff --git a/code/fgame/actor.cpp b/code/fgame/actor.cpp
index fbd90dc8..83770916 100644
--- a/code/fgame/actor.cpp
+++ b/code/fgame/actor.cpp
@@ -2226,6 +2226,8 @@ Event EV_Actor_SetDefaultVisibilityThreshold
     "updates the default value for 'nonvislevel'",
     EV_NORMAL
 );
+// Added in 2.0
+//====
 Event EV_Actor_SetSuppressChance
 (
     "suppresschance",
@@ -2335,6 +2337,7 @@ Event EV_Actor_GetRunAnimRate
     EV_GETTER
 );
 //====
+//====
 //
 // Added in 2.30
 //====
diff --git a/code/fgame/level.h b/code/fgame/level.h
index 2ebe307b..9c5c7a69 100644
--- a/code/fgame/level.h
+++ b/code/fgame/level.h
@@ -153,7 +153,7 @@ public:
     qboolean ai_on;
     qboolean m_bAlarm;
     qboolean mbNoDropHealth;
-    qboolean mbNoDropWeapons; // Added in 2.0
+    qboolean mbNoDropWeapons; // Added in 2.30
     int      m_iPapersLevel;
 
     // Mission state
diff --git a/code/fgame/scriptslave.cpp b/code/fgame/scriptslave.cpp
index 68ce494b..30ba4670 100644
--- a/code/fgame/scriptslave.cpp
+++ b/code/fgame/scriptslave.cpp
@@ -491,6 +491,7 @@ Event EV_ScriptSlave_FollowPath
     "ignorevelocity, normalangles, loop, and a number specifying the start time.",
     EV_NORMAL
 );
+// Added in 2.0
 Event EV_ScriptSlave_FollowPath_RelativeYaw
 (
     "path_relativeyaw",
@@ -618,7 +619,7 @@ Event EV_ScriptSlave_ModifyFlyPath
     "position",
     EV_NORMAL
 );
-
+// Added in 2.0
 Event EV_ScriptSlave_NormalAngles
 (
     "normalangles",
diff --git a/code/fgame/vehicle.cpp b/code/fgame/vehicle.cpp
index 9af050b5..82898b4a 100644
--- a/code/fgame/vehicle.cpp
+++ b/code/fgame/vehicle.cpp
@@ -3726,7 +3726,8 @@ void Vehicle::DriverUse(Event *ev)
         DetachDriverSlot(slot, vec_zero, NULL);
 
         if (IsSubclassOfVehicleTank()) {
-            // Added check to see if the turret is valid in OPM
+            // Added in OPM
+            //  Check to see if the turret is valid in OPM
             if (Turrets[0].ent && Turrets[0].ent->IsSubclassOfVehicleTurretGun()) {
                 DetachRemoteOwner();
             }
@@ -4674,7 +4675,9 @@ void Vehicle::Postthink(void)
     }
 
     SetSlotsNonSolid();
-    if (m_bAnimMove) { // 2.0: use vehicle's animation to move
+    // Added in 2.0
+    //  use vehicle's animation to move
+    if (m_bAnimMove) {
         AnimMoveVehicle();
     } else {
         if (!m_bMovementLocked) {