diff --git a/MachineTool/DemoBuildMachineTool.cs b/MachineTool/DemoBuildMachineTool.cs
index 456c35b..7e4d2b1 100644
--- a/MachineTool/DemoBuildMachineTool.cs
+++ b/MachineTool/DemoBuildMachineTool.cs
@@ -25,7 +25,7 @@ namespace Sample.MachineTool
     {
         static DemoBuildMachineTool()
         {
-            XFactory.Default.Regs.Add(XName, (xml, baseDirectory, relFile, res) => new DemoBuildMachineTool());
+            XFactory.Regs.Add(XName, (xml, baseDirectory, relFile, res) => new DemoBuildMachineTool());
         }
         /// <summary>
         /// Generates an XYZ-ABC machine tool instance from embedded resources.
diff --git a/Machining/DemoBuildGeomOnlyMachiningProject.cs b/Machining/DemoBuildGeomOnlyMachiningProject.cs
index da0b20d..09b856d 100644
--- a/Machining/DemoBuildGeomOnlyMachiningProject.cs
+++ b/Machining/DemoBuildGeomOnlyMachiningProject.cs
@@ -4,7 +4,6 @@ using Hi.MachiningProcs;
 using Hi.Mech.Topo;
 using Hi.Milling.Apts;
 using Hi.Milling.Cutters;
-using Hi.MongoUtils;
 using Hi.NcMech.Fixtures;
 using Hi.NcMech.Workpieces;
 using Hi.NcMech.Xyzabc;
@@ -12,13 +11,16 @@ using System.Collections.Generic;
 using System.IO;
 using System;
 using Hi.NcMech.Holders;
-using Hi.Licenses;
 using Hi.Machining;
 using Hi.MillingMech.MillingTools;
 using Hi.HiNcKits;
 
 namespace Sample.Machining
 {
+    /// <remarks>
+    /// ### Source Code
+    /// [!code-csharp[SampleCode](~/../Hi.Sample/Machining/DemoBuildGeomOnlyMachiningProject.cs)]
+    /// </remarks>
     public static class DemoBuildGeomOnlyMachiningProject
     {
         internal static MillingCutter CreateGeomOnlyMillingCutter()
@@ -84,7 +86,7 @@ namespace Sample.Machining
             };
 
             machiningProject.MachiningEquipment.MachiningChain
-                = XFactory.Default.GenByFile<CodeXyzabcMachineTool>(
+                = XFactory.GenByFile<CodeXyzabcMachineTool>(
                     "Resource", "MachineTool/PMC-B1/PMC-B1.mt", GenMode.Default);
             machiningProject.MachiningEquipment.MachiningChainFile = "PMC-B1/PMC-B1.mt";
 
diff --git a/Machining/DemoBuildMachiningProject.cs b/Machining/DemoBuildMachiningProject.cs
index 1c7e479..1d29dd5 100644
--- a/Machining/DemoBuildMachiningProject.cs
+++ b/Machining/DemoBuildMachiningProject.cs
@@ -203,16 +203,16 @@ namespace Sample.Machining
                 InitGeom = new Box3d(0, 0, -50, 70, 50, 0),
                 IdealGeom = null,
                 WorkpieceGeomToFixtureBuckleTransformer = new StaticTranslation(new Vec3d(0, 0, 0)),
-                MillingPara = XFactory.Default.GenByFile<ICuttingPara>(
+                MillingPara = XFactory.GenByFile<ICuttingPara>(
                     "Resource/CuttingParameter", "Al6061T6.mp", GenMode.Default),
-                WorkpieceMaterial = XFactory.Default.GenByFile<WorkpieceMaterial>(
+                WorkpieceMaterial = XFactory.GenByFile<WorkpieceMaterial>(
                     "Resource/WorkpieceMaterial", "Al6061T6.WorkpieceMaterial", GenMode.Default),
             };
             #endregion
 
             #region ConfigureMachineChain
             machiningProject.MachiningEquipment.MachiningChain
-                = XFactory.Default.GenByFile<CodeXyzabcMachineTool>(
+                = XFactory.GenByFile<CodeXyzabcMachineTool>(
                     "Resource", "MachineTool/PMC-B1/PMC-B1.mt", GenMode.Default);
             #endregion