The subject matter of this application admits of illustration by a drawing to facilitate understanding of the invention. Applicant is required to furnish a drawing under 37 CFR 1.81 . No new matter may be introduced in the required drawing. Applicant is given a shortened statutory period of TWO (2) MONTHS to submit a drawing in compliance with 37 CFR 1.81 . Extensions of time may be obtained under the provisions of 37 CFR 1.136(a) but in no case can any extension carry the date for reply to this letter beyond the maximum period of SIX MONTHS set by statute ( 35 U.S.C. 133 ). Failure to timely submit a drawing will result in ABANDONMENT of the application.