+<li>The main list contains the list of volumes to split. You can click on
+ a volume in the 3D viewer and it will be highlighted (lock Shift
+ keyboard button to select several volumes). Click \b Add button and
+ the ID of this volume will be added to the list. To remove the
+ selected element or elements from the list click \b Remove button. <b>Sort
+ list</b> button allows to sort the list of IDs. \b Filter button allows applying a filter to the selection of volumes.
+ <br><b>Note:</b> If you split not all adjacent non-tetrahedral
+ volumes, your mesh becomes non-conform.</li>
+
+<li><b>Apply to all</b> radio button allows splitting all
+ volumes of the currently selected mesh.</li>
+
+<li>If \b Tetrahedron element type is selected, <b> Split hexahedron </b> group allows specifying the number of tetrahedra a hexahedron will be split into. If the chosen method does not allow to get a conform mesh, a generic solution is applied: an additional node is created at the gravity center of a hexahedron, serving an apex of tetrahedra, all quadrangle sides of the hexahedron are split into two triangles each serving a base of a new tetrahedron.</li>
+
+<li>If \b Prism element type is selected, the <b>Split hexahedron</b> group looks as follows:
+
+\image html split_into_prisms.png