diff --git a/Example/ExampleNodeGraph.asset b/Example/ExampleNodeGraph.asset
index b09f280..9650943 100644
Binary files a/Example/ExampleNodeGraph.asset and b/Example/ExampleNodeGraph.asset differ
diff --git a/Example/Nodes/TestNode.cs b/Example/Nodes/TestNode.cs
index 900ddf4..e16136d 100644
--- a/Example/Nodes/TestNode.cs
+++ b/Example/Nodes/TestNode.cs
@@ -4,16 +4,16 @@ using UnityEngine;
 
 public class TestNode : Node {
 
-	public int i;
-	public float f;
-	public double d;
-	public long l;
-	public bool b;
-	public string s;
-	public Rect r;
-	public Vector2 v2;
-	public Vector3 v3;
-	public Vector4 v4;
-	public Color col;
-	public AnimationCurve a;
+	public int myInt;
+	[Input(false)] public float myFloat;
+	public double myDouble;
+	public long myLong;
+	public bool myBool;
+	[Input(true)] public string myString;
+	public Rect myRect;
+	[Input(true)] public Vector2 myVec2;
+	[Input(true)] public Vector3 myVec3;
+	public Vector4 myVec4;
+	public Color myColor;
+	public AnimationCurve myCurve;
 }
diff --git a/Scripts/Editor/NodeEditorGUI.cs b/Scripts/Editor/NodeEditorGUI.cs
index cc7fca0..2dac4cb 100644
--- a/Scripts/Editor/NodeEditorGUI.cs
+++ b/Scripts/Editor/NodeEditorGUI.cs
@@ -15,6 +15,7 @@ public partial class NodeEditorWindow {
         DrawConnections();
         DrawDraggedConnection();
         DrawNodes();
+        DrawTooltip();
 
         GUI.matrix = m;
     }
@@ -193,4 +194,14 @@ public partial class NodeEditorWindow {
             if (onValidate != null && nodeHash != selectedNode.GetHashCode()) onValidate.Invoke(selectedNode, null);
         }
     }
+
+    private void DrawTooltip() {
+        if (hoveredPort != null) {
+            GUIContent content = new GUIContent(hoveredPort.type.ToString());
+            Vector2 size = NodeEditorResources.styles.tooltip.CalcSize(content);
+            Rect rect = new Rect(Event.current.mousePosition - (size), size);
+            EditorGUI.LabelField(rect, content, NodeEditorResources.styles.tooltip);
+            Repaint();
+        }
+    }
 }
\ No newline at end of file
diff --git a/Scripts/Editor/NodeEditorGUILayout.cs b/Scripts/Editor/NodeEditorGUILayout.cs
index 9683c70..522f352 100644
--- a/Scripts/Editor/NodeEditorGUILayout.cs
+++ b/Scripts/Editor/NodeEditorGUILayout.cs
@@ -11,8 +11,8 @@ public class NodeEditorGUILayout {
 
     private static double tempValue;
 
-    public static object PortField(string label, object value, NodePort port, bool fallback, out Vector2 portPosition) {
-        if (fallback) value = PropertyField(label, value);
+    public static object PortField(string label, object value, System.Type type, NodePort port, bool fallback, out Vector2 portPosition) {
+        if (fallback) value = PropertyField(label, value, type);
         else EditorGUILayout.LabelField(label);
 
         Rect rect = GUILayoutUtility.GetLastRect();
@@ -50,15 +50,15 @@ public class NodeEditorGUILayout {
         if (NodeEditorUtilities.GetAttrib(fieldAttribs, out inputAttrib)) {
             NodePort port = target.GetPortByFieldName(fieldName);
             Vector2 portPos;
-            fieldValue = PortField(fieldPrettyName, fieldValue, port, inputAttrib.fallback, out portPos);
+            fieldValue = PortField(fieldPrettyName, fieldValue, fieldType, port, inputAttrib.fallback, out portPos);
             portPositions.Add(port, portPos);
         } else if (NodeEditorUtilities.GetAttrib(fieldAttribs, out outputAttrib)) {
             NodePort port = target.GetPortByFieldName(fieldName);
             Vector2 portPos;
-            fieldValue = PortField(fieldPrettyName, fieldValue, port, outputAttrib.fallback, out portPos);
+            fieldValue = PortField(fieldPrettyName, fieldValue, fieldType, port, outputAttrib.fallback, out portPos);
             portPositions.Add(port, portPos);
         } else {
-            fieldValue = PropertyField(fieldPrettyName, fieldValue);
+            fieldValue = PropertyField(fieldPrettyName, fieldValue, fieldType);
         }
 
         if (EditorGUI.EndChangeCheck()) {
@@ -68,7 +68,7 @@ public class NodeEditorGUILayout {
         return fieldValue;
     }
 
-    public static object PropertyField(string label, object value) {
+    public static object PropertyField(string label, object value, System.Type type) {
         if (value is int) return IntField(label, (int) value);
         else if (value is float) return FloatField(label, (float) value);
         else if (value is double) return DoubleField(label, (double) value);
@@ -82,7 +82,7 @@ public class NodeEditorGUILayout {
         else if (value is Vector4) return Vector4Field(label, (Vector4) value);
         else if (value is Color) return ColorField(label, (Color) value);
         else if (value is AnimationCurve) return CurveField(label, (AnimationCurve) value);
-        else if (value == null || value.GetType().IsSubclassOf(typeof(UnityEngine.Object)) || value.GetType() == typeof(UnityEngine.Object)) return ObjectField(label, (UnityEngine.Object) value);
+        else if (type.IsSubclassOf(typeof(UnityEngine.Object)) || type == typeof(UnityEngine.Object)) return ObjectField(label, (UnityEngine.Object) value);
         else return value;
     }
     public static Rect GetRect(string label) {
diff --git a/Scripts/Editor/NodeEditorResources.cs b/Scripts/Editor/NodeEditorResources.cs
index 7ec60ad..70853e6 100644
--- a/Scripts/Editor/NodeEditorResources.cs
+++ b/Scripts/Editor/NodeEditorResources.cs
@@ -26,7 +26,7 @@ public static class NodeEditorResources {
     public static Styles _styles = null;
 
     public class Styles {
-        public GUIStyle inputPort, outputPort, nodeHeader, nodeBody;
+        public GUIStyle inputPort, outputPort, nodeHeader, nodeBody, tooltip;
 
         public Styles() {
             GUIStyle baseStyle = new GUIStyle("Label");
@@ -49,6 +49,12 @@ public static class NodeEditorResources {
             nodeBody.normal.background = NodeEditorResources.nodeBody;
             nodeBody.border = new RectOffset(32, 32, 32, 32);
             nodeBody.padding = new RectOffset(16, 16, 4, 6);
+
+            tooltip = new GUIStyle("helpBox");
+            tooltip.alignment = TextAnchor.MiddleCenter;
+            //tooltip.border = new RectOffset(0, 0, 0, 0);
+            //tooltip.normal.background
+            //tooltip.padding = new RectOffset(0, 0, 0, 0);
         }
     }