+ /** \brief Add the entities of constraint for points coincidence into the appropriate list
+ * \param[in] thePoint1 identifier of the first point
+ * \param[in] thePoint2 identifier of the second point
+ * \return \c true if the points are added successfully, and
+ * \c false if the constraint is the extra one (should not be created in SolveSpace)
+ */
+ bool addCoincidentPoints(const Slvs_hEntity& thePoint1, const Slvs_hEntity& thePoint2);
+