\u2018WX 87\u2019 is a new and distinct waxflower plant notable for its very late flowering, compact growth habit, and dense terminal cover of large white flowers that age to white with green-yellow hypanthium. The input end has a plurality of touch control handwriting devices adopted for users to write characters and draft drawings on each of first touch screens thereof, respectively; and the host control display end has a computer mainframe and a host touch control display device. The spaced apart edge portions may be continuously or periodically interdigitated to provide the increased capacitive coupling therebetween. The guide element self-adjusts with closing of the probing forceps so that the centering axis is automatically aligned in the middle with respect to the two oppositely disposed sides of the neck of the femur. The invention is further directed towards a structural assembly comprising an elongate member engaging in a receiving formation of a receiving member and a clamp embracing the receiving member to clamp the elongate member in the receiving formation.