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<PRE>
  To compute an LQ factorization of an n-by-m matrix A (A = L * Q),
  having a min(n,p)-by-p zero triangle in the upper right-hand side
  corner, as shown below, for n = 8, m = 7, and p = 2:

         [ x x x x x 0 0 ]
         [ x x x x x x 0 ]
         [ x x x x x x x ]
         [ x x x x x x x ]
     A = [ x x x x x x x ],
         [ x x x x x x x ]
         [ x x x x x x x ]
         [ x x x x x x x ]

  and optionally apply the transformations to an l-by-m matrix B
  (from the right). T