--- /dev/null
+.. _copy_mesh_page:
+
+*********
+Copy Mesh
+*********
+
+A mesh can be created by copying a part of or the whole other mesh. There are two modes of the operation:
+
+* copy mesh elements only;
+* copy mesh definition to another geometry. This mode can be used only if the source mesh is based on geometry. It is supposed that the new geometry is a modified geometry of the source mesh.
+
+*To make a copy of a mesh:*
+
+.. |img| image:: ../images/copy_mesh_icon.png
+
+From the contextual menu in the Object Browser of from the **Mesh** menu select **Copy Mesh** or click *"Copy Mesh"* button |img| in the toolbar.
+
+The following dialog box will appear:
+
+.. image:: ../images/copy_mesh_dlg.png
+ :align: center
+
+
+In the dialog:
+
+* select the mode of the operation.
+* specify the part of mesh to copy:
+
+ * **Select whole mesh, sub-mesh or group** by mouse activating this checkbox; or
+ * choose mesh elements with the mouse in the 3D Viewer. It is possible to select a whole area with a mouse frame; or
+ * input the **Source Element IDs** directly in this field. The selected elements will be highlighted in the viewer; or
+ * apply Filters. **Set filter** button allows to apply a filter to the selection of elements. See more about filters in the :ref:`selection_filter_library_page` page.
+
+* specify the **New Mesh Name**;
+* select the **New Geometry**;
+* specify the conditions of copying:
+
+ * activate **Generate groups** check-box to copy the groups of the source mesh to the newly created mesh. In the mode of copying to new geometry, standalone groups are copied only if **Copy Mesh Elements** is activated.
+ * activate **Reuse hypotheses** check-box to use hypotheses applied to the source mesh in the new mesh. Hypotheses having parameters defined as sub-shapes will be copied independently of this check-box state.
+ * activate **Copy Mesh Element** to copy mesh elements of sub-shapes that are not modified.
+
+* Click **Apply** or **Apply and Close** button to confirm the operation.
+
+---------------------------------------------------
+Limitations of copying the mesh to the new geometry
+---------------------------------------------------
+
+It can happen that a sub-shape used to define a sub-mesh, group or hypotheses is not found in the new geometry. In this case a new object depending on the not found sub-shape is marked with red color in the Object Browser in order to allow identifying such objects and to fix them, either by modifying their definition or by removing. If a depending object is a group on geometry, a standalone group is created instead. You can't transform it to a group on geometry, it can only be removed and re-created anew.
+
+Empty standalone groups are not constructed.
+
+**See Also** a sample script of :ref:`tui_copy_mesh`.
+
