diff --git a/docs/examples/modeling-ant/ant.ds3 b/docs/examples/modeling-ant/ant.ds3
index 89a45453..132ca56c 100644
--- a/docs/examples/modeling-ant/ant.ds3
+++ b/docs/examples/modeling-ant/ant.ds3
@@ -1,149 +1,149 @@
DUST3D 1.0 xml 0000000194
-
-
+
+
‰PNG
diff --git a/docs/examples/modeling-ant/index.rst b/docs/examples/modeling-ant/index.rst
index 24d5ddcd..b0e9ddba 100644
--- a/docs/examples/modeling-ant/index.rst
+++ b/docs/examples/modeling-ant/index.rst
@@ -21,7 +21,7 @@ Modeling in Dust3D
#. Click Plus(+) Icon from Tool Box
#. Place node on the canvas acording to the reference background.
#. Use Mouse Wheel to Adjust the radius of the node, hold shift to slow down the scroll scale.
-#. Use the Parts List panel to toggle the settings to make you can easily select or see nodes.
+#. Use the Parts List panel to toggle the settings to make you easily select or see nodes.
#. Use Mouse Middle button pluse Shift key to rotate and move around the Rendered Model.
.. image:: https://raw.githubusercontent.com/huxingyi/dust3d/master/docs/examples/modeling-ant/modeling-ant-dust3d-screenshot.png
diff --git a/docs/install.rst b/docs/install.rst
index 07f662a4..8bca4954 100644
--- a/docs/install.rst
+++ b/docs/install.rst
@@ -18,4 +18,6 @@ Dust3D haven't yet been released, however, you can try the latest unstable versi
Found BUG?
-If you have any thoughts while using Dust3D, please don't hesitate to share by drop it here https://github.com/huxingyi/dust3d/issues
\ No newline at end of file
+If you have any thoughts while using Dust3D, please don't hesitate to share by drop it here,
+
+ https://github.com/huxingyi/dust3d/issues
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diff --git a/docs/interface/parts-list-panel.png b/docs/interface/parts-list-panel.png
new file mode 100644
index 00000000..43e28c2a
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diff --git a/docs/interface/parts-list-panel.xcf b/docs/interface/parts-list-panel.xcf
new file mode 100644
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diff --git a/docs/interface/parts_panel.rst b/docs/interface/parts_panel.rst
new file mode 100644
index 00000000..6baf110f
--- /dev/null
+++ b/docs/interface/parts_panel.rst
@@ -0,0 +1,41 @@
+Parts List Panel
+------------------------
+
+.. image:: https://raw.githubusercontent.com/huxingyi/dust3d/master/docs/interface/parts-list-panel.png
+
+In Dust3D, model consists of parts, part consists of nodes. User manipulats nodes's position and radius, toggle part's settings, then the mesh autogenerated by Dust3D.
+
+Top Mini Buttons
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+(From left to right)
+
+* Visible/(H)idden
+
+Toggle the part's visibility on canvas, the mesh generation would not be affected. You can use it to hide some parts, then make edit other parts not been covered.
+
+* (J)oin/Not Join(to Final Mesh)
+
+Toggle the part's enablility, affects the final mesh generation. Unjoined parts would not appear in the result.
+
+* (L)ock/Unlock
+
+Toggle the part's edit lock. Locked part would still be visible on canvas, but can not been checked or edited.
+
+Rendered Part Preview
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Shows the rendered image of the whole part's generated mesh.
+
+Bottom Mini Buttons
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+* (B)ox/Subdivisioned Box
+
+Toggle the basic unit type of mesh generation. Box means quad face, subdivisioned box means octagon face. If you want more sharp edges, choose box, otherwise choose subdivisioned box to make edges smooth.
+
+* Thickness Modifier
+
+This is used when you want make fish body like mesh, or a thin or thick plane.
+The are two parameters for this modifier, one controls the thickness along the base plane normal, the other controls the thickness along the perpendicular of base plane normal.
+
+* Mirror Modifier
+
+If there are two parts have the same shape but one sit left, the other sit right. It's like the human body, you no need to make the arm part two times, just once, and mirror it.
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