A method for displaying an electronic program guide to a viewer. The isocyanate-terminated prepolymer is produced by reacting a stoichiometric excess of an isocyanate with an isocyanate-reactive component that includes: from about 10 to about 70 equivalent percent of a polyoxypropylene diol having a molecular weight in excess of 1500 Da and an average unsaturation level no greater than about 0. Alternatively, the inventive mechanism may control a selected one of two delay elements so as to automatically and adaptively adjust the delay value of the selected delay element so as to equalize the signal delay incurred along two or more signal paths.