/*! \page diagonal_inversion_of_elements_page Diagonal inversion of two triangles \n In MESH you can inverse the diagonal (edge) of a pseudo-quadrangle formed by two neighboring triangles with one common edge. To inverse the diagonal:
  1. From the \b Modification menu choose the Diagonal inversion item or click "Diagonal Inversion" button in the toolbar. \image html image70.png
    "Diagonal Inversion" button
    The following dialog box shall appear: \image html diagonalinversion.png
  2. Enter IDs of nodes forming the required edge in the \b Edge field (the node IDs must be separated by dashes) or select this edge in the 3D viewer.
  3. Click the \b Apply or Apply and Close button.
\image html image38.jpg "The selected edge" \image html image36.jpg "The inverted edge"
See Also a sample TUI Script of a \ref tui_diagonal_inversion "Diagonal Inversion of Elements" operation. */