diff --git a/Turtle.types.ps1xml b/Turtle.types.ps1xml
index 6178096..2633e59 100644
--- a/Turtle.types.ps1xml
+++ b/Turtle.types.ps1xml
@@ -8429,10 +8429,6 @@ foreach ($javaScriptProperty in $this.psobject.properties | Sort-Object Name) {
     )
 }</Value>
       </NoteProperty>
-      <NoteProperty>
-        <Name>get_heading.js</Name>
-        <Value>heading: 0.0</Value>
-      </NoteProperty>
       <NoteProperty>
         <Name>go.js</Name>
         <Value>function go() {
@@ -8447,6 +8443,17 @@ foreach ($javaScriptProperty in $this.psobject.properties | Sort-Object Name) {
         <Name>goto.js</Name>
         <Value>function goto(x,y) { return this.step(x - this.x, y - this.y) }</Value>
       </NoteProperty>
+      <NoteProperty>
+        <Name>heading.js</Name>
+        <Value>function get_heading() {
+    const _ = this
+    if ( _['#heading'] === undefined ) {
+        _['#heading'] = 0.0
+    }
+    return _['#heading']
+}
+</Value>
+      </NoteProperty>
       <NoteProperty>
         <Name>height.js</Name>
         <Value>height: 0.0</Value>
@@ -8520,7 +8527,7 @@ foreach ($javaScriptProperty in $this.psobject.properties | Sort-Object Name) {
       </NoteProperty>
       <NoteProperty>
         <Name>pathData.js</Name>
-        <Value>function get_pathData() {
+        <Value>function pathData() {
     let startX = 0;
     let startY = 0;
     if (!this.min)  { this.min = { x: 0.0, y: 0.0}}
@@ -8579,14 +8586,12 @@ foreach ($javaScriptProperty in $this.psobject.properties | Sort-Object Name) {
       <NoteProperty>
         <Name>set_heading.js</Name>
         <Value>function set_heading(value) {
-    let _ = this
+    const _ = this
     try {
         _['#heading'] = new Number(value)
     } catch {
-        
         _['#heading'] = 0.0
     }
-    
     return _
 }</Value>
       </NoteProperty>
@@ -8610,7 +8615,7 @@ foreach ($javaScriptProperty in $this.psobject.properties | Sort-Object Name) {
         <Value>function teleport(x,y) {
     var penState = this.penDown
     this.penDown = false
-    step(x - this.x, y - this.y)
+    this.step(x - this.x, y - this.y)
     this.penDown = penState
     return this
 }</Value>
diff --git a/Types/Turtle.js/get_heading.js b/Types/Turtle.js/get_heading.js
deleted file mode 100644
index 776f648..0000000
--- a/Types/Turtle.js/get_heading.js
+++ /dev/null
@@ -1 +0,0 @@
-heading: 0.0
\ No newline at end of file
diff --git a/Types/Turtle.js/heading.js b/Types/Turtle.js/heading.js
new file mode 100644
index 0000000..bf11f24
--- /dev/null
+++ b/Types/Turtle.js/heading.js
@@ -0,0 +1,7 @@
+function get_heading() {
+    const _ = this
+    if ( _['#heading'] === undefined ) {
+        _['#heading'] = 0.0
+    }
+    return _['#heading']
+}
diff --git a/Types/Turtle.js/pathData.js b/Types/Turtle.js/pathData.js
index 8133b6c..ce5b349 100644
--- a/Types/Turtle.js/pathData.js
+++ b/Types/Turtle.js/pathData.js
@@ -1,4 +1,4 @@
-function get_pathData() {
+function pathData() {
     let startX = 0;
     let startY = 0;
     if (!this.min)  { this.min = { x: 0.0, y: 0.0}}
diff --git a/Types/Turtle.js/set_heading.js b/Types/Turtle.js/set_heading.js
index 020740d..12a2bcd 100644
--- a/Types/Turtle.js/set_heading.js
+++ b/Types/Turtle.js/set_heading.js
@@ -1,11 +1,9 @@
 function set_heading(value) {
-    let _ = this
+    const _ = this
     try {
         _['#heading'] = new Number(value)
     } catch {
-        
         _['#heading'] = 0.0
     }
-    
     return _
 }
\ No newline at end of file
diff --git a/Types/Turtle.js/teleport.js b/Types/Turtle.js/teleport.js
index 703b335..73a821c 100644
--- a/Types/Turtle.js/teleport.js
+++ b/Types/Turtle.js/teleport.js
@@ -1,7 +1,7 @@
 function teleport(x,y) {
     var penState = this.penDown
     this.penDown = false
-    step(x - this.x, y - this.y)
+    this.step(x - this.x, y - this.y)
     this.penDown = penState
     return this
 }
\ No newline at end of file