-for splitting opposite edges of quadrilateral faces
-in a logically uniform direction. When this group is
-activated, the list is filled with propagation chains found within the
-model. When a chain is selected in the list its edges are
-shown in the Viewer with arrows, which enables choosing a common
-direction for all chain edges. \b Reverse button inverts the common
-direction of chain edges. If \b Add button is active, some
-edges of a chain have a different direction, so you can click \b Add
-button to add them to <b>Reversed Edges</b> list.
+for splitting opposite edges of quadrilateral faces in a logically
+uniform direction. When this group is activated, the list is filled
+with propagation chains found within the shape on which a hypothesis
+is assigned. When a chain is selected in the list its edges are shown
+in the Viewer with arrows, which enables choosing a common direction
+for all chain edges. \b Reverse button inverts the common direction of
+chain edges. \b Add button is active if some edges of a chain have a
+different direction, so you can click \b Add button to add them
+to <b>Reversed Edges</b> list.