-Note that one of two objects should be a line and another one a point (i.e. a point, a line or an arc end point, a center of a circle or an arc).
+Note that one of two objects should be a line and the other a point (i.e. a point, a line or an arc end point, a center of a circle or an arc).
+
+| After the objects are selected, the point is moved to the middle of the line.
+| The middle points are marked with a special sign.