No delay or omission on part of the holder of this Note in exercising any right hereunder shall operate as a waiver of any such right or of any other right of such holder, nor shall any delay, omission or waiver on any one occasion be deemed a bar to or waiver of the same or any other right on any future occasion. The rights and remedies of the Holder shall be cumulative and may be pursued singly, successively, or together, in the sole discretion of the Holder.