diff --git a/OpenMEP/Element/DuctSystem.cs b/OpenMEP/Element/DuctSystem.cs
new file mode 100644
index 00000000..1fe0f0ed
--- /dev/null
+++ b/OpenMEP/Element/DuctSystem.cs
@@ -0,0 +1,46 @@
+using Autodesk.Revit.DB.Mechanical;
+using Autodesk.Revit.DB.Plumbing;
+using OpenMEP.Helpers;
+using RevitServices.Persistence;
+
+namespace OpenMEP.Element;
+
+public class DuctSystem
+{
+    private DuctSystem()
+    {
+    }
+
+    /// <summary>
+    /// flag true to return all ducting systems
+    /// </summary>
+    /// <param name="toggle">flag true or false to fresh</param>
+    /// <returns name="ductSystemTypes">pipePingSystemTypes</returns>
+    public static IEnumerable<Revit.Elements.Element?> GetAllDuctSystemTypes(bool toggle)
+    {
+        // filter for all piping systems
+        Autodesk.Revit.DB.FilteredElementCollector collector = new Autodesk.Revit.DB.FilteredElementCollector(DocumentManager.Instance.CurrentDBDocument);
+        Autodesk.Revit.DB.ElementClassFilter filter = new Autodesk.Revit.DB.ElementClassFilter(typeof(Autodesk.Revit.DB.Mechanical.MechanicalSystemType));
+        Autodesk.Revit.DB.FilteredElementIterator iterator = collector.WherePasses(filter).GetElementIterator();
+        iterator.Reset();
+        while (iterator.MoveNext())
+        {
+            Autodesk.Revit.DB.Element element = iterator.Current!;
+            if (element is MechanicalSystemType pipingSystemType)
+            {
+                yield return pipingSystemType.ToDynamoType();
+            }
+        }
+    }
+    
+    /// <summary>
+    /// return duct system type by name
+    /// </summary>
+    /// <param name="typeName">name of pipe system type</param>
+    /// <returns name="ductSystemType">the element system type</returns>
+    public static Revit.Elements.Element? GetDuctSystemTypeByName(string typeName)
+    {
+        return GetAllDuctSystemTypes(true).FirstOrDefault(x => x!.Name == typeName);
+    }
+
+}
\ No newline at end of file
diff --git a/OpenMEP/Element/DuctType.cs b/OpenMEP/Element/DuctType.cs
new file mode 100644
index 00000000..0f1c3e2c
--- /dev/null
+++ b/OpenMEP/Element/DuctType.cs
@@ -0,0 +1,48 @@
+using OpenMEP.Helpers;
+using RevitServices.Persistence;
+
+namespace OpenMEP.Element;
+
+public class DuctType
+{
+    private DuctType()
+    {
+        
+    }
+    
+    /// <summary>
+    /// get pipe type by name
+    /// </summary>
+    /// <param name="typeName">type name of duct</param>
+    /// <returns name="ductType">type of duct</returns>
+    public static Revit.Elements.Element? GetDuctTypeByName(string typeName)
+    {
+        return GetAllDuctTypes().FirstOrDefault(x => x!.Name == typeName);
+    }
+    
+    /// <summary>
+    ///  return all duct types of the current document
+    /// </summary>
+    /// <returns name="ductTypes">All Duct Types</returns>
+    public static List<Revit.Elements.Element?> GetAllDuctTypes()
+    {
+        // Get all the pipe types in the current document
+        Autodesk.Revit.DB.Document doc = DocumentManager.Instance.CurrentDBDocument;
+        Autodesk.Revit.DB.FilteredElementCollector collector = new Autodesk.Revit.DB.FilteredElementCollector(doc);
+        Autodesk.Revit.DB.ElementClassFilter filter = new Autodesk.Revit.DB.ElementClassFilter(typeof(Autodesk.Revit.DB.Mechanical.DuctType));
+        Autodesk.Revit.DB.FilteredElementIterator iterator = collector.WherePasses(filter).GetElementIterator();
+        iterator.Reset();
+        List<Revit.Elements.Element?> pipeTypes = new List<Revit.Elements.Element?>();
+        while (iterator.MoveNext())
+        {
+            Autodesk.Revit.DB.Element element = iterator.Current!;
+            if (element is Autodesk.Revit.DB.Mechanical.DuctType ductType)
+            {
+                pipeTypes.Add(ductType.ToDynamoType());
+            }
+        }
+        return pipeTypes;
+    }
+
+    
+}
\ No newline at end of file
diff --git a/OpenMEP/Element/MEPCurveType.cs b/OpenMEP/Element/MEPCurveType.cs
new file mode 100644
index 00000000..5891b52f
--- /dev/null
+++ b/OpenMEP/Element/MEPCurveType.cs
@@ -0,0 +1,136 @@
+using System.Security.Policy;
+using OpenMEP.Helpers;
+
+namespace OpenMEP.Element;
+
+/// <summary>
+/// A class can use for DuctType, PipeType, CableTrayType, ConduitType, WireType, MEPCurveType
+/// </summary>
+public class MEPCurveType
+{
+    private MEPCurveType()
+    {
+        
+    }
+
+    /// <summary>The default cross fitting of the MEP curve type.</summary>
+    /// <para name="mepcurvetype">type of mep curve</para>
+    /// <remarks>This property is used to retrieve the default cross fitting of the MEP curve type,
+    /// and can be <see langword="null" /> if there is no default value.
+    /// Use <see cref="T:Autodesk.Revit.DB.RoutingPreferenceManager" /> to set this property for PipeType MEPCurves.
+    /// </remarks>
+    /// <returns name="familyType">Cross fitting</returns>
+    public static Revit.Elements.Element? Cross(Revit.Elements.Element mepcurvetype)
+    {
+        if (mepcurvetype == null) throw new ArgumentNullException(nameof(mepcurvetype));
+        var mepCurveType = mepcurvetype.InternalElement as Autodesk.Revit.DB.MEPCurveType;
+        if(mepCurveType!.Cross== null) return null;
+        return mepCurveType!.Cross.ToDynamoType();
+    }
+    
+    /// <summary>The default elbow fitting of the MEP curve type.</summary>
+    /// <para name="mepcurvetype">type of mep curve</para>
+    /// <remarks>This property is used to retrieve the default elbow fitting of the MEP curve type,
+    /// and can be <see langword="null" /> if there is no default value.
+    /// Use <see cref="T:Autodesk.Revit.DB.RoutingPreferenceManager" /> to set this property for PipeType MEPCurves.
+    /// </remarks>
+    /// <returns name="familyType">Elbow fitting</returns>
+    public static Revit.Elements.Element? Elbow(Revit.Elements.Element mepcurvetype)
+    {
+        if (mepcurvetype == null) throw new ArgumentNullException(nameof(mepcurvetype));
+        var mepCurveType = mepcurvetype.InternalElement as Autodesk.Revit.DB.MEPCurveType;
+        if(mepCurveType!.Elbow== null) return null;
+        return mepCurveType!.Elbow.ToDynamoType();
+    }
+    
+    /// <summary>The default tap fitting of the MEP curve type.</summary>
+    /// <para name="mepcurvetype">type of mep curve</para>
+    /// <remarks>This property is used to retrieve the default tap fitting of the MEP curve type,
+    /// and can be <see langword="null" /> if there is no default value.
+    /// Use <see cref="T:Autodesk.Revit.DB.RoutingPreferenceManager" /> to set this property for PipeType MEPCurves.
+    /// </remarks>
+    /// <returns name="familyType">Tap fitting</returns>
+    public static Revit.Elements.Element? Tap(Revit.Elements.Element mepcurvetype)
+    {
+        if (mepcurvetype == null) throw new ArgumentNullException(nameof(mepcurvetype));
+        var mepCurveType = mepcurvetype.InternalElement as Autodesk.Revit.DB.MEPCurveType;
+        if(mepCurveType!.Tap== null) return null;
+        return mepCurveType!.Tap.ToDynamoType();
+    }
+    
+    /// <summary>The default union fitting of the MEP curve type.</summary>
+    /// <para name="mepcurvetype">type of mep curve</para>
+    /// <remarks>This property is used to retrieve the default union fitting of the MEP curve type,
+    /// and can be <see langword="null" /> if there is no default value.
+    /// Use <see cref="T:Autodesk.Revit.DB.RoutingPreferenceManager" /> to set this property for PipeType MEPCurves.
+    /// </remarks>
+    /// <returns name="familyType">union fitting</returns>
+    public static Revit.Elements.Element? Union(Revit.Elements.Element mepcurvetype)
+    {
+        if (mepcurvetype == null) throw new ArgumentNullException(nameof(mepcurvetype));
+        var mepCurveType = mepcurvetype.InternalElement as Autodesk.Revit.DB.MEPCurveType;
+        if(mepCurveType!.Union== null) return null;
+        return mepCurveType!.Union.ToDynamoType();
+    }
+    
+    /// <summary>The default transition fitting of the MEP curve type.</summary>
+    /// <para name="mepcurvetype">type of mep curve</para>
+    /// <remarks>This property is used to retrieve the default transition fitting of the MEP curve type,
+    /// and can be <see langword="null" /> if there is no default value.
+    /// Use <see cref="T:Autodesk.Revit.DB.RoutingPreferenceManager" /> to set this property for PipeType MEPCurves.
+    /// </remarks>
+    /// <returns name="familyType">transition fitting</returns>
+    public static Revit.Elements.Element? Transition(Revit.Elements.Element mepcurvetype)
+    {
+        if (mepcurvetype == null) throw new ArgumentNullException(nameof(mepcurvetype));
+        var mepCurveType = mepcurvetype.InternalElement as Autodesk.Revit.DB.MEPCurveType;
+        if(mepCurveType!.Transition== null) return null;
+        return mepCurveType!.Transition.ToDynamoType();
+    }
+    
+    /// <summary>The default multi shape transition fitting of the MEP curve type.</summary>
+    /// <para name="mepcurvetype">type of mep curve</para>
+    /// <remarks>This property is used to retrieve the default multi shape transition fitting of the MEP curve type,
+    /// and can be <see langword="null" /> if there is no default value.
+    /// Use <see cref="T:Autodesk.Revit.DB.RoutingPreferenceManager" /> to set this property for PipeType MEPCurves.
+    /// </remarks>
+    /// <returns name="familyType"> multi shape transition fitting</returns>
+    public static Revit.Elements.Element? MultiShapeTransition(Revit.Elements.Element mepcurvetype)
+    {
+        if (mepcurvetype == null) throw new ArgumentNullException(nameof(mepcurvetype));
+        var mepCurveType = mepcurvetype.InternalElement as Autodesk.Revit.DB.MEPCurveType;
+        if (mepCurveType!.MultiShapeTransition == null) return null;
+        return mepCurveType.MultiShapeTransition.ToDynamoType();
+    }
+    
+    /// <summary>The shape of the profile.</summary>
+    /// <para name="mepcurvetype">type of mep curve</para>
+    /// <since>2019</since>
+    /// <returns name="Autodesk.Revit.DB.ConnectorProfileType">ConnectorProfileType</returns>
+    public static dynamic Shape(Revit.Elements.Element mepcurvetype)
+    {
+        if (mepcurvetype == null) throw new ArgumentNullException(nameof(mepcurvetype));
+        var mepCurveType = mepcurvetype.InternalElement as Autodesk.Revit.DB.MEPCurveType;
+        return mepCurveType!.Shape;
+    }
+    
+    /// <summary>The roughness of the MEP curve type.  For PipeTypes, please use Segment::Roughness</summary>
+    /// <para name="mepcurvetype">type of mep curve</para>
+    /// <returns name="double">Roughness</returns>
+    public static double Roughness(Revit.Elements.Element mepcurvetype)
+    {
+        if (mepcurvetype == null) throw new ArgumentNullException(nameof(mepcurvetype));
+        var mepCurveType = mepcurvetype.InternalElement as Autodesk.Revit.DB.MEPCurveType;
+        return mepCurveType!.Roughness;
+    }
+    
+    /// <summary>The preferred junction type of the MEP curve type.</summary>
+    /// <para name="mepcurvetype">type of mep curve</para>
+    /// <remarks>Use <see cref="T:Autodesk.Revit.DB.RoutingPreferenceManager" /> to set this property for PipeType MEPCurves.</remarks>
+    public static dynamic PreferredJunctionType(Revit.Elements.Element mepcurvetype)
+    {
+        if (mepcurvetype == null) throw new ArgumentNullException(nameof(mepcurvetype));
+        var mepCurveType = mepcurvetype.InternalElement as Autodesk.Revit.DB.MEPCurveType;
+        return mepCurveType!.PreferredJunctionType;
+    }
+}
\ No newline at end of file
diff --git a/OpenMEP/Element/Pipe.cs b/OpenMEP/Element/Pipe.cs
index 91ac7821..d391e040 100644
--- a/OpenMEP/Element/Pipe.cs
+++ b/OpenMEP/Element/Pipe.cs
@@ -523,7 +523,7 @@ Autodesk.DesignScript.Geometry.Point point
     /// Return Tee Of Pipe In Routing Preferences
     /// </summary>
     /// <param name="pipe">pipe</param>
-    /// <returns name="tee">tee</returns>
+    /// <returns name="familyType">tee</returns>
     public static global::Revit.Elements.Element? GetTee(global::Revit.Elements.Element pipe)
     {
         Autodesk.Revit.DB.Plumbing.Pipe? pipeInternalElement = pipe.InternalElement as Autodesk.Revit.DB.Plumbing.Pipe;
@@ -536,7 +536,7 @@ Autodesk.DesignScript.Geometry.Point point
     /// Return Union Of Pipe In Routing Preferences
     /// </summary>
     /// <param name="pipe">pipe</param>
-    /// <returns name="union">union</returns>
+    /// <returns name="familyType">union</returns>
     public static global::Revit.Elements.Element? GetUnion(global::Revit.Elements.Element pipe)
     {
         Autodesk.Revit.DB.Plumbing.Pipe? pipeInternalElement = pipe.InternalElement as Autodesk.Revit.DB.Plumbing.Pipe;
@@ -549,7 +549,7 @@ Autodesk.DesignScript.Geometry.Point point
     /// Return Cross Of Pipe In Routing Preferences
     /// </summary>
     /// <param name="pipe">pipe</param>
-    /// <returns name="cross">cross</returns>
+    /// <returns name="familyType">cross</returns>
     public static global::Revit.Elements.Element? GetCross(global::Revit.Elements.Element pipe)
     {
         Autodesk.Revit.DB.Plumbing.Pipe? pipeInternalElement = pipe.InternalElement as Autodesk.Revit.DB.Plumbing.Pipe;
@@ -562,7 +562,7 @@ Autodesk.DesignScript.Geometry.Point point
     /// Return Tap Of Pipe In Routing Preferences
     /// </summary>
     /// <param name="pipe">pipe</param>
-    /// <returns name="tap">tap</returns>
+    /// <returns name="familyType">tap</returns>
     public static global::Revit.Elements.Element? GetTap(global::Revit.Elements.Element pipe)
     {
         Autodesk.Revit.DB.Plumbing.Pipe? pipeInternalElement = pipe.InternalElement as Autodesk.Revit.DB.Plumbing.Pipe;
@@ -576,7 +576,7 @@ Autodesk.DesignScript.Geometry.Point point
     /// Return Transition Of Pipe In Routing Preferences
     /// </summary>
     /// <param name="pipe">pipe</param>
-    /// <returns name="transition">transition</returns>
+    /// <returns name="familyType">transition</returns>
     public static global::Revit.Elements.Element? GetTransition(global::Revit.Elements.Element pipe)
     {
         Autodesk.Revit.DB.Plumbing.Pipe? pipeInternalElement = pipe.InternalElement as Autodesk.Revit.DB.Plumbing.Pipe;
diff --git a/OpenMEP/Element/PipingSystem.cs b/OpenMEP/Element/PipingSystem.cs
index cac4b9eb..c2d7a2a5 100644
--- a/OpenMEP/Element/PipingSystem.cs
+++ b/OpenMEP/Element/PipingSystem.cs
@@ -14,7 +14,7 @@ private PipingSystem()
     /// flag true to return all piping systems
     /// </summary>
     /// <param name="toggle">flag true or false to fresh</param>
-    /// <returns name="pipeingSystemTypes">pipePingSystemTypes</returns>
+    /// <returns name="pipeSystemTypes">pipeSystemTypes</returns>
     public static IEnumerable<Revit.Elements.Element?> GetAllPipeSystemTypes(bool toggle)
     {
         // filter for all piping systems
@@ -33,4 +33,14 @@ private PipingSystem()
         }
     }
     
+    /// <summary>
+    /// return pipe system type by name
+    /// </summary>
+    /// <param name="typeName">name of pipe system type</param>
+    /// <returns name="pipeSystemType">the element system type</returns>
+    public static Revit.Elements.Element? GetPipeSystemTypeByName(string typeName)
+    {
+        return GetAllPipeSystemTypes(true).FirstOrDefault(x => x!.Name == typeName);
+    }
+
 }
\ No newline at end of file
diff --git a/OpenMEPSandbox/Geometry/Point.cs b/OpenMEPSandbox/Geometry/Point.cs
index 39af21ac..2d5d81d2 100644
--- a/OpenMEPSandbox/Geometry/Point.cs
+++ b/OpenMEPSandbox/Geometry/Point.cs
@@ -15,20 +15,16 @@ private Point()
     /// Project a point onto a plane
     /// </summary>
     /// <param name="point">point need to project</param>
-    /// <param name="planeNormal">vector normal of plane</param>
+    /// <param name="plane">plane to be project</param>
     /// <returns name="point">new point projected on plane</returns>
     public static Autodesk.DesignScript.Geometry.Point ProjectOntoPlane(
         Autodesk.DesignScript.Geometry.Point point,
-        Autodesk.DesignScript.Geometry.Vector planeNormal)
+        Autodesk.DesignScript.Geometry.Plane plane)
     {
-        double a = planeNormal.X;
-        double b = planeNormal.Y;
-        double c = planeNormal.Z;
-
-        double dx = (b * b + c * c) * point.X - (a * b) * point.Y - (a * c) * point.Z;
-        double dy = -(b * a) * point.X + (a * a + c * c) * point.Y - (b * c) * point.Z;
-        double dz = -(c * a) * point.X - (c * b) * point.Y + (a * a + b * b) * point.Z;
-        return Autodesk.DesignScript.Geometry.Point.ByCoordinates(dx, dy, dz);
+        Point3 point3 = point.ToGSharkType();
+        GShark.Geometry.Plane plane1 = plane.ToGSharkType();
+        Point3 projectedPoint = point3.ProjectToPlan(plane1);
+        return Autodesk.DesignScript.Geometry.Point.ByCoordinates(projectedPoint.X, projectedPoint.Y, projectedPoint.Z);
     }
 
     /// <summary>
diff --git a/docs/OpenMEPPage/geometry/dyn/Point.ProjectOntoPlane.dyn b/docs/OpenMEPPage/geometry/dyn/Point.ProjectOntoPlane.dyn
index e0ce5650..30c6865d 100644
--- a/docs/OpenMEPPage/geometry/dyn/Point.ProjectOntoPlane.dyn
+++ b/docs/OpenMEPPage/geometry/dyn/Point.ProjectOntoPlane.dyn
@@ -1,5 +1,5 @@
 {
-  "Uuid": "dea79531-866c-4b5f-bbae-66a6e5f8ca07",
+  "Uuid": "be6d3684-e989-41a6-b7ff-db8e311a8556",
   "IsCustomNode": false,
   "Description": "",
   "Name": "Point.ProjectOntoPlane",
@@ -11,12 +11,11 @@
   "Nodes": [
     {
       "ConcreteType": "Dynamo.Graph.Nodes.ZeroTouch.DSFunction, DynamoCore",
+      "Id": "5ca103062a7b4d2a96b409d98de9205a",
       "NodeType": "FunctionNode",
-      "FunctionSignature": "OpenMEP.Geometry.Point.ProjectOntoPlane@Autodesk.DesignScript.Geometry.Point,Autodesk.DesignScript.Geometry.Vector",
-      "Id": "9db3e3d8f1ad49d28f05fec994f69872",
       "Inputs": [
         {
-          "Id": "98c560b82ae24e6e92a461070549289e",
+          "Id": "32e9a38014274d94a48d372379c540a1",
           "Name": "point",
           "Description": "point need to project\n\nPoint",
           "UsingDefaultValue": false,
@@ -25,9 +24,9 @@
           "KeepListStructure": false
         },
         {
-          "Id": "9af7f920466e41b387f8a556477b36e3",
-          "Name": "planeNormal",
-          "Description": "vector normal of plane\n\nVector",
+          "Id": "b24d4326919f47a1a8b985f191e9ce4e",
+          "Name": "plane",
+          "Description": "plane to be project\n\nPlane",
           "UsingDefaultValue": false,
           "Level": 2,
           "UseLevels": false,
@@ -36,7 +35,7 @@
       ],
       "Outputs": [
         {
-          "Id": "56d2f4c2bcc443efa27bcb211f9f23b6",
+          "Id": "291e908c772940de80f87bbb51b77f1d",
           "Name": "point",
           "Description": "new point projected on plane",
           "UsingDefaultValue": false,
@@ -45,17 +44,17 @@
           "KeepListStructure": false
         }
       ],
+      "FunctionSignature": "OpenMEPSandbox.Geometry.Point.ProjectOntoPlane@Autodesk.DesignScript.Geometry.Point,Autodesk.DesignScript.Geometry.Plane",
       "Replication": "Auto",
-      "Description": "Project a point onto a plane\n\nPoint.ProjectOntoPlane (point: Point, planeNormal: Vector): Point"
+      "Description": "Project a point onto a plane\n\nPoint.ProjectOntoPlane (point: Point, plane: Plane): Point"
     },
     {
       "ConcreteType": "Dynamo.Graph.Nodes.ZeroTouch.DSFunction, DynamoCore",
+      "Id": "1a1013b3c121477eb54370545263e274",
       "NodeType": "FunctionNode",
-      "FunctionSignature": "Autodesk.DesignScript.Geometry.Plane.ByOriginNormal@Autodesk.DesignScript.Geometry.Point,Autodesk.DesignScript.Geometry.Vector",
-      "Id": "c1a2dbda9b91437f89e4515ff2ae897b",
       "Inputs": [
         {
-          "Id": "0a67e5f48e1b40968a59cfad202b3c67",
+          "Id": "b42ba31cc58a4c249b92af42c8cbb64c",
           "Name": "origin",
           "Description": "Origin point of plane\n\nPoint\nDefault value : Autodesk.DesignScript.Geometry.Point.ByCoordinates(0, 0, 0)",
           "UsingDefaultValue": true,
@@ -64,7 +63,7 @@
           "KeepListStructure": false
         },
         {
-          "Id": "dc0bc441b1ad47338760ad5e5062d36a",
+          "Id": "3c629953d5ce44afb561bbe38dcb21fa",
           "Name": "normal",
           "Description": "Normal direction vector of plane\n\nVector\nDefault value : Autodesk.DesignScript.Geometry.Vector.ByCoordinates(0, 0, 1)",
           "UsingDefaultValue": true,
@@ -75,7 +74,7 @@
       ],
       "Outputs": [
         {
-          "Id": "454a75a42d3c42b18ee00233d7cf1b67",
+          "Id": "fd3ee420ca9049cfb6b2379c0f291086",
           "Name": "Plane",
           "Description": "Plane created by origin and normal",
           "UsingDefaultValue": false,
@@ -84,47 +83,17 @@
           "KeepListStructure": false
         }
       ],
+      "FunctionSignature": "Autodesk.DesignScript.Geometry.Plane.ByOriginNormal@Autodesk.DesignScript.Geometry.Point,Autodesk.DesignScript.Geometry.Vector",
       "Replication": "Auto",
       "Description": "Create a Plane centered at root Point, with input normal Vector.\n\nPlane.ByOriginNormal (origin: Point = Autodesk.DesignScript.Geometry.Point.ByCoordinates(0, 0, 0), normal: Vector = Autodesk.DesignScript.Geometry.Vector.ByCoordinates(0, 0, 1)): Plane"
     },
     {
       "ConcreteType": "Dynamo.Graph.Nodes.ZeroTouch.DSFunction, DynamoCore",
+      "Id": "31b6c4ecf51747aa871b6512bb3715c3",
       "NodeType": "FunctionNode",
-      "FunctionSignature": "Autodesk.DesignScript.Geometry.Plane.Normal",
-      "Id": "c6fc306c64a04296a760a0606fc7a9c4",
-      "Inputs": [
-        {
-          "Id": "d50a9d47e78b4ad78a7baa93250c505a",
-          "Name": "plane",
-          "Description": "Autodesk.DesignScript.Geometry.Plane",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        }
-      ],
-      "Outputs": [
-        {
-          "Id": "f8a6a9b046994e76875664888b6536c1",
-          "Name": "Vector",
-          "Description": "Vector",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        }
-      ],
-      "Replication": "Auto",
-      "Description": "Returns the normal direction of the Plane.\n\nPlane.Normal: Vector"
-    },
-    {
-      "ConcreteType": "Dynamo.Graph.Nodes.ZeroTouch.DSFunction, DynamoCore",
-      "NodeType": "FunctionNode",
-      "FunctionSignature": "Autodesk.DesignScript.Geometry.Point.ByCoordinates@double,double,double",
-      "Id": "470da233c4cc4a27a64ad7089fd5c662",
       "Inputs": [
         {
-          "Id": "ad62c3c7366e4ce0a84d6a6e5ddfd995",
+          "Id": "c8ecb1057fd841cc8867f6a7fb599673",
           "Name": "x",
           "Description": "X coordinate\n\ndouble\nDefault value : 0",
           "UsingDefaultValue": true,
@@ -133,7 +102,7 @@
           "KeepListStructure": false
         },
         {
-          "Id": "e0086bb2eab543b9b4aeaa28332f5571",
+          "Id": "d6659a67941a465dae7d988c0657939d",
           "Name": "y",
           "Description": "Y coordinate\n\ndouble\nDefault value : 0",
           "UsingDefaultValue": true,
@@ -142,7 +111,7 @@
           "KeepListStructure": false
         },
         {
-          "Id": "08362fda7b72472d82605985acd02d93",
+          "Id": "d2afbb6214b540f9b298b2b3627685af",
           "Name": "z",
           "Description": "Z coordinate\n\ndouble\nDefault value : 0",
           "UsingDefaultValue": true,
@@ -153,7 +122,7 @@
       ],
       "Outputs": [
         {
-          "Id": "699967768ea546babf1ccca4f0ad9bb0",
+          "Id": "013a55293e8b4b89bfcb3884d0667850",
           "Name": "Point",
           "Description": "Point created by coordinates",
           "UsingDefaultValue": false,
@@ -162,57 +131,42 @@
           "KeepListStructure": false
         }
       ],
+      "FunctionSignature": "Autodesk.DesignScript.Geometry.Point.ByCoordinates@double,double,double",
       "Replication": "Auto",
       "Description": "Form a Point given 3 cartesian coordinates\n\nPoint.ByCoordinates (x: double = 0, y: double = 0, z: double = 0): Point"
     },
     {
-      "ConcreteType": "Dynamo.Graph.Nodes.ZeroTouch.DSFunction, DynamoCore",
-      "NodeType": "FunctionNode",
-      "FunctionSignature": "Autodesk.DesignScript.Geometry.Vector.Cross@Autodesk.DesignScript.Geometry.Vector",
-      "Id": "ff5d04026c9b4c00805ae4c8d48acc1a",
-      "Inputs": [
-        {
-          "Id": "b80a377ed531426c8ede82da93be6760",
-          "Name": "vector",
-          "Description": "Autodesk.DesignScript.Geometry.Vector",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        },
-        {
-          "Id": "965b1fd48484472ab543371b6d0da81f",
-          "Name": "cross",
-          "Description": "Vector",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        }
-      ],
+      "ConcreteType": "CoreNodeModels.Input.IntegerSlider, CoreNodeModels",
+      "NumberType": "Integer",
+      "MaximumValue": 100,
+      "MinimumValue": 0,
+      "StepValue": 1,
+      "Id": "f8fe11b241574d9ab93bd28663294195",
+      "NodeType": "NumberInputNode",
+      "Inputs": [],
       "Outputs": [
         {
-          "Id": "72dfec5f3fc6404a955ce9ae4695e132",
-          "Name": "Vector",
-          "Description": "Vector",
+          "Id": "bec293287d3a4b13a70fb50776644f4b",
+          "Name": "",
+          "Description": "Int64",
           "UsingDefaultValue": false,
           "Level": 2,
           "UseLevels": false,
           "KeepListStructure": false
         }
       ],
-      "Replication": "Auto",
-      "Description": "Form the cross product of two vectors\n\nVector.Cross (cross: Vector): Vector"
+      "Replication": "Disabled",
+      "Description": "Produces integer values",
+      "InputValue": 8
     },
     {
       "ConcreteType": "Dynamo.Graph.Nodes.ZeroTouch.DSFunction, DynamoCore",
+      "Id": "738c02fa1d2842b4ba5f17bb15a98207",
       "NodeType": "FunctionNode",
-      "FunctionSignature": "Autodesk.DesignScript.Geometry.Vector.XAxis",
-      "Id": "2ffd67b704b34d29b18e3852faed9c48",
       "Inputs": [],
       "Outputs": [
         {
-          "Id": "9c34b419197142d680e60f583e9f7881",
+          "Id": "ae2431e62d8949eb9b78b1729d5cd2e3",
           "Name": "Vector",
           "Description": "Vector",
           "UsingDefaultValue": false,
@@ -221,91 +175,37 @@
           "KeepListStructure": false
         }
       ],
+      "FunctionSignature": "Autodesk.DesignScript.Geometry.Vector.XAxis",
       "Replication": "Auto",
       "Description": "Get the canonical X axis Vector (1,0,0)\n\nVector.XAxis ( ): Vector"
     },
-    {
-      "ConcreteType": "CoreNodeModels.Input.DoubleSlider, CoreNodeModels",
-      "NodeType": "NumberInputNode",
-      "NumberType": "Double",
-      "MaximumValue": 50.0,
-      "MinimumValue": -50.0,
-      "StepValue": 3.0,
-      "InputValue": -50.0,
-      "Id": "608440d5091d4503b9152928cc9ae629",
-      "Inputs": [],
-      "Outputs": [
-        {
-          "Id": "eb890b80d7aa4c868c251b8178f01620",
-          "Name": "",
-          "Description": "Double",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        }
-      ],
-      "Replication": "Disabled",
-      "Description": "A slider that produces numeric values."
-    },
     {
       "ConcreteType": "Dynamo.Graph.Nodes.ZeroTouch.DSFunction, DynamoCore",
+      "Id": "4c7daf830a4a478c8384678b601316a3",
       "NodeType": "FunctionNode",
-      "FunctionSignature": "Autodesk.DesignScript.Geometry.Circle.ByPlaneRadius@Autodesk.DesignScript.Geometry.Plane,double",
-      "Id": "ac63d31d97ad4de9a1e4f7aaad928111",
       "Inputs": [
         {
-          "Id": "8c62bb281e6341bda84d1b212715d35a",
-          "Name": "plane",
-          "Description": "Root of plane used to center circle\n\nPlane\nDefault value : Autodesk.DesignScript.Geometry.Plane.XY()",
+          "Id": "2d7e4e1715824f0c9e410276a52f8d40",
+          "Name": "x",
+          "Description": "X coordinate\n\ndouble\nDefault value : 0",
           "UsingDefaultValue": true,
           "Level": 2,
           "UseLevels": false,
           "KeepListStructure": false
         },
         {
-          "Id": "0e0a2084c516430483f9be63f5baa41a",
-          "Name": "radius",
-          "Description": "Radius\n\ndouble\nDefault value : 1",
-          "UsingDefaultValue": true,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        }
-      ],
-      "Outputs": [
-        {
-          "Id": "437726f34cfe43428a5bea40d4984565",
-          "Name": "Circle",
-          "Description": "Circle created with plane and radius",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        }
-      ],
-      "Replication": "Auto",
-      "Description": "Create a Circle centered at the input Plane origin (root), lying in the input Plane, with given radius.\n\nCircle.ByPlaneRadius (plane: Plane = Autodesk.DesignScript.Geometry.Plane.XY(), radius: double = 1): Circle"
-    },
-    {
-      "ConcreteType": "Dynamo.Graph.Nodes.ZeroTouch.DSFunction, DynamoCore",
-      "NodeType": "FunctionNode",
-      "FunctionSignature": "Autodesk.DesignScript.Geometry.Plane.ByOriginNormal@Autodesk.DesignScript.Geometry.Point,Autodesk.DesignScript.Geometry.Vector",
-      "Id": "942f1646d84a42c189027d37ad5191d7",
-      "Inputs": [
-        {
-          "Id": "23939fafe9f245d487431d7c942d8b68",
-          "Name": "origin",
-          "Description": "Origin point of plane\n\nPoint\nDefault value : Autodesk.DesignScript.Geometry.Point.ByCoordinates(0, 0, 0)",
+          "Id": "a5d95aceb070402d910ec3e5d58b5e43",
+          "Name": "y",
+          "Description": "Y coordinate\n\ndouble\nDefault value : 0",
           "UsingDefaultValue": true,
           "Level": 2,
           "UseLevels": false,
           "KeepListStructure": false
         },
         {
-          "Id": "b8bb0edd7fb54b5b8efc1d10b8352931",
-          "Name": "normal",
-          "Description": "Normal direction vector of plane\n\nVector\nDefault value : Autodesk.DesignScript.Geometry.Vector.ByCoordinates(0, 0, 1)",
+          "Id": "526115ea73654afcb0a4cd9470c8435a",
+          "Name": "z",
+          "Description": "Z coordinate\n\ndouble\nDefault value : 0",
           "UsingDefaultValue": true,
           "Level": 2,
           "UseLevels": false,
@@ -314,29 +214,33 @@
       ],
       "Outputs": [
         {
-          "Id": "b16a76c0322f414297f703018b7bcef5",
-          "Name": "Plane",
-          "Description": "Plane created by origin and normal",
+          "Id": "79fd9f4d9ea44661946968af4da2ff36",
+          "Name": "Point",
+          "Description": "Point created by coordinates",
           "UsingDefaultValue": false,
           "Level": 2,
           "UseLevels": false,
           "KeepListStructure": false
         }
       ],
+      "FunctionSignature": "Autodesk.DesignScript.Geometry.Point.ByCoordinates@double,double,double",
       "Replication": "Auto",
-      "Description": "Create a Plane centered at root Point, with input normal Vector.\n\nPlane.ByOriginNormal (origin: Point = Autodesk.DesignScript.Geometry.Point.ByCoordinates(0, 0, 0), normal: Vector = Autodesk.DesignScript.Geometry.Vector.ByCoordinates(0, 0, 1)): Plane"
+      "Description": "Form a Point given 3 cartesian coordinates\n\nPoint.ByCoordinates (x: double = 0, y: double = 0, z: double = 0): Point"
     },
     {
-      "ConcreteType": "Dynamo.Graph.Nodes.CodeBlockNodeModel, DynamoCore",
-      "NodeType": "CodeBlockNode",
-      "Code": "20;",
-      "Id": "38fecbadfd114d35af64a6aa18951269",
+      "ConcreteType": "CoreNodeModels.Input.IntegerSlider, CoreNodeModels",
+      "NumberType": "Integer",
+      "MaximumValue": 100,
+      "MinimumValue": 0,
+      "StepValue": 1,
+      "Id": "95027c7558f8442096360d64275b6771",
+      "NodeType": "NumberInputNode",
       "Inputs": [],
       "Outputs": [
         {
-          "Id": "9824a939f9644fcf980d5395b3fb189d",
+          "Id": "bbccf804de1d4c7d91af6434db6da284",
           "Name": "",
-          "Description": "Value of expression at line 1",
+          "Description": "Int64",
           "UsingDefaultValue": false,
           "Level": 2,
           "UseLevels": false,
@@ -344,46 +248,16 @@
         }
       ],
       "Replication": "Disabled",
-      "Description": "Allows for DesignScript code to be authored directly"
-    },
-    {
-      "ConcreteType": "Dynamo.Graph.Nodes.ZeroTouch.DSFunction, DynamoCore",
-      "NodeType": "FunctionNode",
-      "FunctionSignature": "Autodesk.DesignScript.Geometry.Surface.ByPatch@Autodesk.DesignScript.Geometry.Curve",
-      "Id": "a19c70f027264e13bf422917a6eeeacf",
-      "Inputs": [
-        {
-          "Id": "084d90b3903141f0818188ee6f56baed",
-          "Name": "closedCurve",
-          "Description": "Closed curve used as surface boundary\n\nCurve",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        }
-      ],
-      "Outputs": [
-        {
-          "Id": "d13492f3e53f4b8590bf9033a29b34f1",
-          "Name": "Surface",
-          "Description": "Surface created by patch",
-          "UsingDefaultValue": false,
-          "Level": 2,
-          "UseLevels": false,
-          "KeepListStructure": false
-        }
-      ],
-      "Replication": "Auto",
-      "Description": "Create a Surface by filling in the interior of a closed boundary defined by input Curves.\n\nSurface.ByPatch (closedCurve: Curve): Surface"
+      "Description": "Produces integer values",
+      "InputValue": 17
     },
     {
       "ConcreteType": "Dynamo.Graph.Nodes.ZeroTouch.DSFunction, DynamoCore",
+      "Id": "6528aacf1cd145948cc3cc225dbe3bff",
       "NodeType": "FunctionNode",
-      "FunctionSignature": "Autodesk.DesignScript.Geometry.Line.ByStartPointEndPoint@Autodesk.DesignScript.Geometry.Point,Autodesk.DesignScript.Geometry.Point",
-      "Id": "e1b75bffb3b841a48943e40832fefd4c",
       "Inputs": [
         {
-          "Id": "32ddfc87ecb74824847ca89fd3d64090",
+          "Id": "26f1048e075b4b158dabb0c96f7a79e4",
           "Name": "startPoint",
           "Description": "Line start point\n\nPoint",
           "UsingDefaultValue": false,
@@ -392,7 +266,7 @@
           "KeepListStructure": false
         },
         {
-          "Id": "2f3b84065de445518f4f8369d9b8e881",
+          "Id": "dd17a777630449d6a8fa1ddcd0033f60",
           "Name": "endPoint",
           "Description": "Line end point\n\nPoint",
           "UsingDefaultValue": false,
@@ -403,7 +277,7 @@
       ],
       "Outputs": [
         {
-          "Id": "052c2a3fdb60490bb8cc291d000c8861",
+          "Id": "e80fb5cdc13946f7800e98a4990a23c5",
           "Name": "Line",
           "Description": "Line from start and end point",
           "UsingDefaultValue": false,
@@ -412,87 +286,84 @@
           "KeepListStructure": false
         }
       ],
+      "FunctionSignature": "Autodesk.DesignScript.Geometry.Line.ByStartPointEndPoint@Autodesk.DesignScript.Geometry.Point,Autodesk.DesignScript.Geometry.Point",
       "Replication": "Auto",
       "Description": "Creates a straight Line between two input Points.\n\nLine.ByStartPointEndPoint (startPoint: Point, endPoint: Point): Line"
+    },
+    {
+      "ConcreteType": "Dynamo.Graph.Nodes.ZeroTouch.DSFunction, DynamoCore",
+      "Id": "7ca55658b01549a3bc24c5fffdf54193",
+      "NodeType": "FunctionNode",
+      "Inputs": [],
+      "Outputs": [
+        {
+          "Id": "470393ce83284ae5a8c4eb25aad5c8bc",
+          "Name": "Vector",
+          "Description": "Vector",
+          "UsingDefaultValue": false,
+          "Level": 2,
+          "UseLevels": false,
+          "KeepListStructure": false
+        }
+      ],
+      "FunctionSignature": "Autodesk.DesignScript.Geometry.Vector.YAxis",
+      "Replication": "Auto",
+      "Description": "Get the canonical Y axis Vector (0,1,0)\n\nVector.YAxis ( ): Vector"
     }
   ],
   "Connectors": [
     {
-      "Start": "56d2f4c2bcc443efa27bcb211f9f23b6",
-      "End": "2f3b84065de445518f4f8369d9b8e881",
-      "Id": "dda6443bf0044d53ad365981f8f92a09",
+      "Start": "291e908c772940de80f87bbb51b77f1d",
+      "End": "dd17a777630449d6a8fa1ddcd0033f60",
+      "Id": "a199c69339f3477d90454d1e74b0b734",
       "IsHidden": "False"
     },
     {
-      "Start": "454a75a42d3c42b18ee00233d7cf1b67",
-      "End": "d50a9d47e78b4ad78a7baa93250c505a",
-      "Id": "66c4f1297ac6407dbef95c1049abe6f8",
+      "Start": "fd3ee420ca9049cfb6b2379c0f291086",
+      "End": "b24d4326919f47a1a8b985f191e9ce4e",
+      "Id": "968c6558590e427c8f762fc0bbdaa225",
       "IsHidden": "False"
     },
     {
-      "Start": "f8a6a9b046994e76875664888b6536c1",
-      "End": "b80a377ed531426c8ede82da93be6760",
-      "Id": "9ca666b2758b47208a51e64777eb162b",
+      "Start": "013a55293e8b4b89bfcb3884d0667850",
+      "End": "32e9a38014274d94a48d372379c540a1",
+      "Id": "6bfe3592a72b4812ba722b7f680f6de0",
       "IsHidden": "False"
     },
     {
-      "Start": "699967768ea546babf1ccca4f0ad9bb0",
-      "End": "98c560b82ae24e6e92a461070549289e",
-      "Id": "24b30cdbb01b4fcfabb8d7b27ca32afe",
+      "Start": "013a55293e8b4b89bfcb3884d0667850",
+      "End": "26f1048e075b4b158dabb0c96f7a79e4",
+      "Id": "aab570264c3e4a309c918208b8799f07",
       "IsHidden": "False"
     },
     {
-      "Start": "699967768ea546babf1ccca4f0ad9bb0",
-      "End": "32ddfc87ecb74824847ca89fd3d64090",
-      "Id": "932a7f613a8e4fb5834546590f4e97e4",
+      "Start": "bec293287d3a4b13a70fb50776644f4b",
+      "End": "c8ecb1057fd841cc8867f6a7fb599673",
+      "Id": "57dd1b78b3a94aaea179e0ccdaa99d31",
       "IsHidden": "False"
     },
     {
-      "Start": "72dfec5f3fc6404a955ce9ae4695e132",
-      "End": "9af7f920466e41b387f8a556477b36e3",
-      "Id": "ce14c96b748f42059d01b6705efc4ac0",
+      "Start": "bec293287d3a4b13a70fb50776644f4b",
+      "End": "d6659a67941a465dae7d988c0657939d",
+      "Id": "89ac6935b3ae402884e48f9f39725225",
       "IsHidden": "False"
     },
     {
-      "Start": "72dfec5f3fc6404a955ce9ae4695e132",
-      "End": "b8bb0edd7fb54b5b8efc1d10b8352931",
-      "Id": "d1812284f1fa4bc19aee493dce59df8e",
+      "Start": "ae2431e62d8949eb9b78b1729d5cd2e3",
+      "End": "3c629953d5ce44afb561bbe38dcb21fa",
+      "Id": "1df0f001eaf54828876fb38b0ad962b0",
       "IsHidden": "False"
     },
     {
-      "Start": "9c34b419197142d680e60f583e9f7881",
-      "End": "965b1fd48484472ab543371b6d0da81f",
-      "Id": "19199c04ede84288872972f375073bd0",
+      "Start": "79fd9f4d9ea44661946968af4da2ff36",
+      "End": "b42ba31cc58a4c249b92af42c8cbb64c",
+      "Id": "6cab15a1cd964039aee2d1f03f031edf",
       "IsHidden": "False"
     },
     {
-      "Start": "eb890b80d7aa4c868c251b8178f01620",
-      "End": "ad62c3c7366e4ce0a84d6a6e5ddfd995",
-      "Id": "213c426b941b400398c256b5f422b614",
-      "IsHidden": "False"
-    },
-    {
-      "Start": "eb890b80d7aa4c868c251b8178f01620",
-      "End": "e0086bb2eab543b9b4aeaa28332f5571",
-      "Id": "bb1a81a15aa74a468382712a04a1e632",
-      "IsHidden": "False"
-    },
-    {
-      "Start": "437726f34cfe43428a5bea40d4984565",
-      "End": "084d90b3903141f0818188ee6f56baed",
-      "Id": "f71a6766e29542f1bc92bd20f99cb3b6",
-      "IsHidden": "False"
-    },
-    {
-      "Start": "b16a76c0322f414297f703018b7bcef5",
-      "End": "8c62bb281e6341bda84d1b212715d35a",
-      "Id": "331b229ac64c4641987d3d4cb42393c2",
-      "IsHidden": "False"
-    },
-    {
-      "Start": "9824a939f9644fcf980d5395b3fb189d",
-      "End": "0e0a2084c516430483f9be63f5baa41a",
-      "Id": "1208a2e5f0824d02bce50ff44d791236",
+      "Start": "bbccf804de1d4c7d91af6434db6da284",
+      "End": "2d7e4e1715824f0c9e410276a52f8d40",
+      "Id": "194c79aeeea744328a92466c61ff8d43",
       "IsHidden": "False"
     }
   ],
@@ -503,7 +374,7 @@
       "Version": "1.0.0",
       "ReferenceType": "Package",
       "Nodes": [
-        "9db3e3d8f1ad49d28f05fec994f69872"
+        "5ca103062a7b4d2a96b409d98de9205a"
       ]
     }
   ],
@@ -513,13 +384,7 @@
     {
       "ExtensionGuid": "28992e1d-abb9-417f-8b1b-05e053bee670",
       "Name": "Properties",
-      "Version": "2.16",
-      "Data": {}
-    },
-    {
-      "ExtensionGuid": "DFBD9CC0-DB40-457A-939E-8C8555555A9D",
-      "Name": "Generative Design",
-      "Version": "3.0",
+      "Version": "2.18",
       "Data": {}
     }
   ],
@@ -536,148 +401,118 @@
       "ScaleFactor": 1.0,
       "HasRunWithoutCrash": true,
       "IsVisibleInDynamoLibrary": true,
-      "Version": "2.16.1.2727",
+      "Version": "2.18.0.2986",
       "RunType": "Automatic",
       "RunPeriod": "1000"
     },
     "Camera": {
-      "Name": "Background Preview",
-      "EyeX": -161.9678955078125,
-      "EyeY": 31.990095138549805,
-      "EyeZ": -17.784633636474609,
-      "LookX": 152.30952453613281,
-      "LookY": -50.175067901611328,
-      "LookZ": 31.512321472167969,
-      "UpX": 0.0938582792878151,
-      "UpY": 0.99539625644683838,
-      "UpZ": 0.019418973475694656
+      "Name": "_Background Preview",
+      "EyeX": 26.784555435180664,
+      "EyeY": 26.384380340576172,
+      "EyeZ": 36.725555419921875,
+      "LookX": -15.971466064453125,
+      "LookY": -21.730712890625,
+      "LookZ": -47.156829833984375,
+      "UpX": -0.062308214604854584,
+      "UpY": 0.98095512390136719,
+      "UpZ": -0.18396934866905212
     },
     "ConnectorPins": [],
     "NodeViews": [
       {
+        "Id": "5ca103062a7b4d2a96b409d98de9205a",
         "Name": "Point.ProjectOntoPlane",
-        "ShowGeometry": true,
-        "Id": "9db3e3d8f1ad49d28f05fec994f69872",
         "IsSetAsInput": false,
         "IsSetAsOutput": false,
         "Excluded": false,
-        "X": 811.4982940821186,
-        "Y": 390.03398229037487
+        "ShowGeometry": true,
+        "X": 702.0,
+        "Y": 351.2
       },
       {
+        "Id": "1a1013b3c121477eb54370545263e274",
         "Name": "Plane.ByOriginNormal",
-        "ShowGeometry": true,
-        "Id": "c1a2dbda9b91437f89e4515ff2ae897b",
         "IsSetAsInput": false,
         "IsSetAsOutput": false,
         "Excluded": false,
-        "X": 49.748829680541007,
-        "Y": 481.23182533851963
-      },
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