/*!

\page viewing_meshes_overview_page Viewing meshes

\n After definition of algorithms and hypotheses a new mesh is listed
in the Object Browser. Right-click on it and select \b Compute - the
mesh will be automatically displayed in the <b>VTK 3D Viewer</b>. 
Alternatively click <b>Display only</b> to hide all other objects at
the same time.

<b>VTK 3D Viewer</b> is described in detail in the documentation on <b>GUI module</b>.
\n After the mesh has appeared in the Viewer, you can select it with
left mouse click and  get information about it, change its
presentation parameters and access to other useful options by
right-clicking on the selected mesh.

\image html dialog.png

<ul>
<li><b>Hide all</b> - allows to hide all objects in the viewer.</li>
<li><b>Update</b> - refreshes the presentation of your mesh in the
Object Browser, applying all recent changes. </li>
<li>\subpage mesh_infos_page "Mesh Infos" -  provides
information about the mesh.</li>
<li>\ref mesh_element_info_anchor "Mesh Element Info" - provides basic
information about the selected element of the mesh. </li>
<li>\subpage numbering_page "Numbering"  - allows to display the ID
numbers of all meshing elements or nodes composing your mesh in the
viewer.</li>
<li>\subpage display_mode_page "Display Mode" - allows to select between
Wireframe, Shading and Nodes presentation.</li>
<li>\subpage display_entity_page "Display Entity" - allows to display
Faces, Edges or both.</li>
<li><b>Orientation of faces</b> - shows vectors of orientation of
faces of the selected mesh</li> 
<li><b>Colors / Size</b> - allows to select color and size of
meshes.</li>
<li>\subpage transparency_page "Transparency" - allows to change the
transparency of mesh elements.</li>
<li>\subpage clipping_page "Clipping" - allows to create cross-sections of the selected objects.</li>
<li>\ref about_quality_controls_page "Controls" - graphically
presents various information about meshes.</li>
<li><b>Hide</b> - allows to hide the selected mesh from the viewer.</li>
<li><b>Show Only</b> -allows to display only the selected mesh, hiding all other from the viewer.</li>
<li><b>Dump view</b> - exports an object from the viewer in bmp, png, jpg or jpeg image format.</li>
<li><b>Change background</b> - allows to redefine the background color. By default it is black.</li>
</ul>

*/