/*! \page uniting_two_triangles_page Uniting two triangles \n In MESH you can union two neighboring triangles (cells) by deletion of the common edge. <em>To unite two triangles:</em> <ol> <li>From the \b Modification menu choose the <b>Union of two triangles</b> item or click <em>"Union of two triangles"</em> button in the toolbar. \image html image71.png <center><em>"Union of two triangles" button</em></center> The following dialog box shall appear: \image html unionoftwotriangles.png </li> <li>Enter the ID of the required edge in the \b Edge field or select this edge in the 3D viewer.</li> <li>Click the \b Apply or <b>Apply and Close</b> button.</li> </ol> \image html uniting_two_triangles1.png "The selected triangles" \image html uniting_two_triangles2.png "The union of two triangles" <br><b>See Also</b> a sample TUI Script of a \ref tui_uniting_two_triangles "Uniting Two Triangles" operation. */