diff --git a/Build/Scripting/ZDoom_ACS.cfg b/Build/Scripting/ZDoom_ACS.cfg
index 39280dc6..afb9e6bd 100644
--- a/Build/Scripting/ZDoom_ACS.cfg
+++ b/Build/Scripting/ZDoom_ACS.cfg
@@ -95,6 +95,7 @@ keywords
 	CheckActorFloorTexture = "CheckActorFloorTexture(tid, texture)";
 	CheckActorInventory = "CheckActorInventory(tid, inventoryitem)";
 	CheckActorProperty = "CheckActorProperty(tid, property, value)";
+  CheckFlag = "bool CheckFlag(int tid, string flag)";
 	CheckInventory = "CheckInventory(inventoryitem)";
 	CheckPlayerCamera = "CheckPlayerCamera(player)";
 	CheckSight = "CheckSight(source, dest, flags)";
@@ -121,6 +122,7 @@ keywords
 	Door_LockedRaise = "Door_LockedRaise(tag, speed, delay, lock, lighttag)";
 	Door_Open = "Door_Open(tag, speed, lighttag)";
 	Door_Raise = "Door_Raise(tag, speed, delay, lighttag)";
+  DropItem = "int DropItem(int tid, string item, int dropamount == -1, int chance == 256)";
 	Elevator_LowerToNearest = "Elevator_LowerToNearest(tag, speed)";
 	Elevator_MoveToFloor = "Elevator_MoveToFloor(tag, speed)";
 	Elevator_RaiseToNearest = "Elevator_RaiseToNearest(tag, speed)";
diff --git a/Build/Scripting/ZDoom_DECORATE.cfg b/Build/Scripting/ZDoom_DECORATE.cfg
index cdbc4063..d8887b70 100644
--- a/Build/Scripting/ZDoom_DECORATE.cfg
+++ b/Build/Scripting/ZDoom_DECORATE.cfg
@@ -129,6 +129,7 @@ keywords
   A_ActiveAndUnblock = "A_ActiveAndUnblock";
   A_ChangeFlag = "A_ChangeFlag(string flagname, bool value)";
   A_ChangeVelocity = "A_ChangeVelocity(float x, float y, float z, int flags)";
+  A_CheckFlag = "A_CheckFlag(string flagname, state label, int check_pointer = AAPTR_DEFAULT)";
   A_ClearShadow = "A_ClearShadow";
   A_CopyFriendliness = "A_CopyFriendliness[(pointer copyfrom)]";
   A_DeQueueCorpse = "A_DeQueueCorpse";
@@ -189,6 +190,7 @@ keywords
   A_GiveInventory = "A_GiveInventory(string type, int count[, pointer giveto])";
   A_GiveToTarget = "A_GiveToTarget(string type, int count[, pointer giveto])";
   A_TakeInventory = "A_TakeInventory(string type, int count[, int flags[, pointer takefrom]])";
+  A_DropItem = "A_DropItem(string item[, int dropamount [, int chance]])";
   A_TakeFromTarget = "A_TakeFromTarget(string type, int count[, pointer takefrom])";
   A_DropInventory = "A_DropInventory(string type)";
   A_SelectWeapon = "A_SelectWeapon(string type)";
diff --git a/Source/Plugins/BuilderModes/ClassicModes/LinedefsMode.cs b/Source/Plugins/BuilderModes/ClassicModes/LinedefsMode.cs
index 568baa0d..4d8cd4ac 100644
--- a/Source/Plugins/BuilderModes/ClassicModes/LinedefsMode.cs
+++ b/Source/Plugins/BuilderModes/ClassicModes/LinedefsMode.cs
@@ -339,11 +339,12 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			if(renderer.StartPlotter(true))
 			{
 				renderer.PlotLinedefSet(General.Map.Map.Linedefs);
-				for(int i = 0; i < Linedef.NUM_ARGS; i++) BuilderPlug.Me.PlotAssociations(renderer, association[i]);
+				if(!panning) //mxd
+					for(int i = 0; i < Linedef.NUM_ARGS; i++) BuilderPlug.Me.PlotAssociations(renderer, association[i]);
 				
 				if((highlighted != null) && !highlighted.IsDisposed)
 				{
-					BuilderPlug.Me.PlotReverseAssociations(renderer, highlightasso);
+					if(!panning) BuilderPlug.Me.PlotReverseAssociations(renderer, highlightasso);
 					renderer.PlotLinedef(highlighted, General.Colors.Highlight);
 				}
 				renderer.PlotVerticesSet(General.Map.Map.Vertices);
@@ -361,9 +362,10 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			// Render selection
 			if(renderer.StartOverlay(true))
 			{
-				if(!panning) //mxd
-					for(int i = 0; i < Linedef.NUM_ARGS; i++) BuilderPlug.Me.RenderAssociations(renderer, association[i]);
-				if(!panning && (highlighted != null) && !highlighted.IsDisposed) BuilderPlug.Me.RenderReverseAssociations(renderer, highlightasso); //mxd
+				if (!panning) { //mxd
+					for (int i = 0; i < Linedef.NUM_ARGS; i++) BuilderPlug.Me.RenderAssociations(renderer, association[i]);
+					if ((highlighted != null) && !highlighted.IsDisposed) BuilderPlug.Me.RenderReverseAssociations(renderer, highlightasso); //mxd
+				}
 				if(selecting) RenderMultiSelection();
 				renderer.Finish();
 			}
diff --git a/Source/Plugins/BuilderModes/ClassicModes/SectorsMode.cs b/Source/Plugins/BuilderModes/ClassicModes/SectorsMode.cs
index 74aa3255..09713976 100644
--- a/Source/Plugins/BuilderModes/ClassicModes/SectorsMode.cs
+++ b/Source/Plugins/BuilderModes/ClassicModes/SectorsMode.cs
@@ -606,7 +606,7 @@ namespace CodeImp.DoomBuilder.BuilderModes
 				if((highlighted != null) && !highlighted.IsDisposed)
 				{
 					renderer.PlotSector(highlighted, General.Colors.Highlight);
-					BuilderPlug.Me.PlotReverseAssociations(renderer, highlightasso);
+					if(!panning) BuilderPlug.Me.PlotReverseAssociations(renderer, highlightasso);
 				}
 				renderer.Finish();
 			}
@@ -619,16 +619,16 @@ namespace CodeImp.DoomBuilder.BuilderModes
 				renderer.Finish();
 			}
 
+			// Render overlay
+			UpdateOverlay();
+
 			// Render selection
-			if(renderer.StartOverlay(true))
+			if(renderer.StartOverlay(false)) 
 			{
-				if(highlighted != null && !highlighted.IsDisposed) BuilderPlug.Me.RenderReverseAssociations(renderer, highlightasso); //mxd
+				if(!panning && highlighted != null && !highlighted.IsDisposed) BuilderPlug.Me.RenderReverseAssociations(renderer, highlightasso); //mxd
 				if(selecting) RenderMultiSelection();
 				renderer.Finish();
 			}
-
-			// Render overlay
-			UpdateOverlay();
 			
 			renderer.Present();
 		}
diff --git a/Source/Plugins/BuilderModes/ClassicModes/ThingsMode.cs b/Source/Plugins/BuilderModes/ClassicModes/ThingsMode.cs
index 7dc90f95..c2f64fde 100644
--- a/Source/Plugins/BuilderModes/ClassicModes/ThingsMode.cs
+++ b/Source/Plugins/BuilderModes/ClassicModes/ThingsMode.cs
@@ -143,12 +143,13 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			renderer.RedrawSurface();
 
 			// Render lines and vertices
-			if(renderer.StartPlotter(true))
-			{
+			if (renderer.StartPlotter(true)) {
 				renderer.PlotLinedefSet(General.Map.Map.Linedefs);
 				renderer.PlotVerticesSet(General.Map.Map.Vertices);
-				for (int i = 0; i < Thing.NUM_ARGS; i++) BuilderPlug.Me.PlotAssociations(renderer, association[i]);
-				if ((highlighted != null) && !highlighted.IsDisposed) BuilderPlug.Me.PlotReverseAssociations(renderer, highlightasso);
+				if(!panning) { //mxd
+					for(int i = 0; i < Thing.NUM_ARGS; i++) BuilderPlug.Me.PlotAssociations(renderer, association[i]);
+					if((highlighted != null) && !highlighted.IsDisposed) BuilderPlug.Me.PlotReverseAssociations(renderer, highlightasso);
+				}
 				renderer.Finish();
 			}
 
@@ -161,12 +162,12 @@ namespace CodeImp.DoomBuilder.BuilderModes
 					for(int i = 0; i < Thing.NUM_ARGS; i++) BuilderPlug.Me.RenderAssociations(renderer, association[i]);
 				if((highlighted != null) && !highlighted.IsDisposed)
 				{
-					if(!panning) BuilderPlug.Me.RenderReverseAssociations(renderer, highlightasso); //mxd
 					renderer.RenderThing(highlighted, General.Colors.Highlight, 1.0f);
+					if(!panning) BuilderPlug.Me.RenderReverseAssociations(renderer, highlightasso); //mxd
 				}
 
 				//mxd
-				if(General.Settings.GZShowEventLines) {
+				if(!panning && General.Settings.GZShowEventLines) {
 					List<Line3D> lines = GZBuilder.Data.LinksCollector.GetThingLinks(General.Map.ThingsFilter.VisibleThings);
 
 					foreach(Line3D l in lines) {