/*!

\page free_borders_page Free borders

\n This mesh quality control highlights 1D elements (segments)
belonging to one element (face or volume) only.

\image html free_borders1.png

In this picture the free borders are displayed in red. (Faces are
explicitly shown via <em>Display Entity</em> menu as all elements but
segments are hidden upon this control activation).

<br><b>See Also</b> a sample TUI Script of a 
\ref tui_free_borders "Free Borders quality control" operation.  

*/