in the selected object.</li>
<li><b>Coincident elements</b> is a list of groups of elements for
merging. After the operation all elements of each group will
- be united into one element.
+ be united into one element. The first element of a group is kept and
+ the others are removed.
<ul>
<li>\b Remove button deletes the selected group from the list.</li>
<li>\b Add button adds to the list a group of elements selected in the
<br>
\image html sort.png
<center>moves the selected element to the first position in the
- group.</center>
+ group in order to keep it in the mesh.</center>
<br>
</li>
<li>To confirm your choice click \b Apply or <b>Apply and Close</b> button.</li>
