diff --git a/resources/Materials/Examples/Syntax/CustomNode.mtlx b/resources/Materials/Examples/Syntax/CustomNode.mtlx
index 7f6eafa1f5..1fe7a65252 100644
--- a/resources/Materials/Examples/Syntax/CustomNode.mtlx
+++ b/resources/Materials/Examples/Syntax/CustomNode.mtlx
@@ -5,7 +5,7 @@
   <!-- The "bg" input is required, while the "fg" input and "fgamt" parameter are optional. -->
   <nodedef name="ND_blend_add_color3" node="blend_add" type="color3" defaultinput="bg">
     <input name="fg" type="color3" value="0,0,0"/>
-    <input name="bg" type="color3"/>
+    <input name="bg" type="color3" value="0,0,0"/>
     <parameter name="fgamt" type="float" value="1.0"/>
   </nodedef>
 
@@ -20,7 +20,7 @@
       <input name="in1" type="color3" nodename="n1"/>
       <input name="in2" type="color3" interfacename="bg"/>
     </add>
-    <output name="o_result" type="color3" nodename="n2"/>
+    <output name="out" type="color3" nodename="n2"/>
   </nodegraph>
 
   <!-- Use this custom node in a nodegraph -->
diff --git a/resources/Materials/Examples/Syntax/PreShaderComposite.mtlx b/resources/Materials/Examples/Syntax/PreShaderComposite.mtlx
index 8174529c33..4d25b347df 100644
--- a/resources/Materials/Examples/Syntax/PreShaderComposite.mtlx
+++ b/resources/Materials/Examples/Syntax/PreShaderComposite.mtlx
@@ -27,8 +27,8 @@
        by mask image files.
   -->
   <nodedef name="ND_triblendsrf_surface" type="surfaceshader" node="triblendsrf">
-    <parameter name="paintmaskfile" type="filename"/>
-    <parameter name="rustmaskfile" type="filename"/>
+    <parameter name="paintmaskfile" type="filename" value=""/>
+    <parameter name="rustmaskfile" type="filename" value=""/>
   </nodedef>
 
   <nodegraph name="NG_triblendsrf_surface" nodedef="ND_triblendsrf_surface">
@@ -115,7 +115,7 @@
     </basic_surface>
     
     <!-- Define the output of the shading network nodegraph -->
-    <output name="o_out" type="surfaceshader" nodename="bsrf1"/>
+    <output name="out" type="surfaceshader" nodename="bsrf1"/>
   </nodegraph>
 
   <!-- Sample blended material using the above network shader -->
diff --git a/resources/Materials/Examples/Syntax/SubGraphs.mtlx b/resources/Materials/Examples/Syntax/SubGraphs.mtlx
index 750acb250c..6b13956b4f 100644
--- a/resources/Materials/Examples/Syntax/SubGraphs.mtlx
+++ b/resources/Materials/Examples/Syntax/SubGraphs.mtlx
@@ -6,7 +6,7 @@
    <nodedef name="ND_checker_float" node="checker" type="float">
       <input name="scale" type="vector2" value="8.0, 8.0"/>
    </nodedef>
-   <nodegraph name="IM_checker_float" nodedef="ND_checker_float">
+   <nodegraph name="NG_checker_float" nodedef="ND_checker_float">
       <texcoord name="texcoord1" type="vector2">
          <parameter name="index" type="integer" value="0"/>
       </texcoord>
@@ -46,7 +46,7 @@
       <input name="color2" type="color3" value="0.1, 0.1, 0.8"/>
       <input name="scale" type="vector2" value="8.0, 8.0"/>
    </nodedef>
-   <nodegraph name="IM_color_checker_color3" nodedef="ND_color_checker_color3">
+   <nodegraph name="NG_color_checker_color3" nodedef="ND_color_checker_color3">
       <checker name="checker1" type="float">
          <input name="scale" type="vector2" interfacename="scale"/>
       </checker>