diff --git a/Source/Plugins/BuilderModes/Resources/Actions.cfg b/Source/Plugins/BuilderModes/Resources/Actions.cfg
index 7611b87..af40074 100644
--- a/Source/Plugins/BuilderModes/Resources/Actions.cfg
+++ b/Source/Plugins/BuilderModes/Resources/Actions.cfg
@@ -1232,6 +1232,17 @@ togglebackslope
 	default = 393299; //Ctrl-Alt-S
 }
 
+toggleskew
+{
+	title = "Toggle Texture Skewing";
+	category = "visual";
+	description = "Toggles texture skewing for selected walls.";
+	allowkeys = true;
+	allowmouse = true;
+	allowscroll = true;
+	default = 0;
+}
+
 placevisualstart
 {
 	title = "Place Visual Mode Camera";
diff --git a/Source/Plugins/BuilderModes/VisualModes/BaseVisualMode.cs b/Source/Plugins/BuilderModes/VisualModes/BaseVisualMode.cs
index bb4f7b9..0ee1cb5 100644
--- a/Source/Plugins/BuilderModes/VisualModes/BaseVisualMode.cs
+++ b/Source/Plugins/BuilderModes/VisualModes/BaseVisualMode.cs
@@ -3829,6 +3829,53 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			ShowTargetInfo();
 		}
 
+		//sphere
+		[BeginAction("resetflags")]
+		public void ResetFlags()
+		{
+			List<VisualGeometry> selection = GetSelectedSurfaces();
+			List<VisualThing> selection2 = GetSelectedVisualThings(true);
+
+			if (selection.Count == 0 && selection2.Count == 0)
+			{
+				General.Interface.DisplayStatus(StatusType.Warning, "Reset flags action requires selected surfaces or things!");
+				return;
+			}
+
+			General.Map.UndoRedo.CreateUndo("Reset flags");
+
+			foreach (VisualGeometry vg in selection)
+			{
+				if (vg.GeometryType == VisualGeometryType.WALL_LOWER ||
+					vg.GeometryType == VisualGeometryType.WALL_MIDDLE ||
+					vg.GeometryType == VisualGeometryType.WALL_UPPER)
+					{
+						vg.Sidedef.Line.ClearFlags();
+
+						if (vg.Sidedef.Line.Back != null && vg.Sidedef.Line.Back.Sector != null)
+							vg.Sidedef.Line.SetFlag(General.Map.Config.DoubleSidedFlag, true);
+						else
+							vg.Sidedef.Line.SetFlag(General.Map.Config.ImpassableFlag, true);
+
+						vg.Sector.UpdateSectorGeometry(true);
+					}
+			}
+
+			foreach (VisualThing vt in selection2)
+			{
+				vt.Thing.ClearFlags();
+			}
+
+			//update changed geometry
+			RebuildElementData();
+			UpdateChangedObjects();
+			ClearSelection();
+			ShowTargetInfo();
+			General.Interface.DisplayStatus(StatusType.Action, "Reset flags for " +
+				selection.Count + (selection.Count == 1 ? " surface and " : " surfaces and ") +
+				selection2.Count + (selection2.Count == 1 ? " thing." : " things."));
+		}
+
 		//mxd
 		[BeginAction("toggleslope")]
 		public void ToggleSlope() 
@@ -4129,6 +4176,48 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			General.Interface.DisplayStatus(StatusType.Action, "Toggled Slope for " + toUpdate.Count + (toUpdate.Count == 1 ? " surface." : " surfaces."));
 		}
 
+		[BeginAction("toggleskew")]
+		public void ToggleSkew()
+		{
+			int counter = 0;
+			List<VisualGeometry> selection = GetSelectedSurfaces();
+			
+			if (selection.Count == 0)
+			{
+				General.Interface.DisplayStatus(StatusType.Warning, "Toggle Skew action requires selected surfaces!");
+				return;
+			}
+
+			General.Map.UndoRedo.CreateUndo("Toggle Skew");
+
+			foreach (VisualGeometry vg in selection)
+			{
+				if (vg.GeometryType == VisualGeometryType.WALL_LOWER || vg.GeometryType == VisualGeometryType.WALL_UPPER)
+					vg.Sidedef.Line.SetFlag("32", vg.Sidedef.Line.IsFlagSet("32") ? false : true);
+
+				else if (vg.GeometryType == VisualGeometryType.WALL_MIDDLE)
+					vg.Sidedef.Line.SetFlag("128", vg.Sidedef.Line.IsFlagSet("128") ? false : true);
+
+				else if (vg.GeometryType == VisualGeometryType.WALL_MIDDLE_3D)
+					vg.GetControlLinedef().SetFlag("8", vg.GetControlLinedef().IsFlagSet("8") ? false : true);
+
+				else
+					continue;
+
+				counter++;
+			}
+
+			if (counter > 0)
+			{
+				RebuildElementData();
+				UpdateChangedObjects();
+				ClearSelection();
+				ShowTargetInfo();
+			}
+
+			General.Interface.DisplayStatus(StatusType.Action, "Toggled Skewing for " + counter + (counter == 1 ? " surface." : " surfaces."));
+		}
+
 		// biwa
 		[BeginAction("visualpaintselect")]
 		protected virtual void OnPaintSelectBegin()