An engagement article is provided that is capable of selectively restricting movement or securing a suspended load in response to a rapid change in tension in one or more lines. Upon selection of a top-level functionality tab, selectable functionalities associated with the top-level functionality tab are divided into logical groupings and are presented in a customizable functionality control section below the tab. The invention also relates to pharmaceutical compositions including said compounds, the preparation of such compounds as well as the use as medicaments. The counter values are stored in association with the respective selected data packets to preserve information regarding the interpacket time intervals. An electrode combination is selected based on the order, and therapy is delivered using the selected electrode combination.