This command enables a group of road design elements to be included within another group, thereby replacing elements of the section affected.
First, the program requests the group to be inserted. Then an end element (initial or final) of the section to be replaced in the destination alignment must be specified. The program then checks whether the initial and final points and the azimuths coincide at those points if the group is moved to the section to be substituted. If this is the case, the section is substituted.