[P] _ms_findomitted -- Find and flag omitted matrix elements
_ms_findomitted bmat vmat [, nocheck]
_ms_findomitted searches for zero-valued elements of row vector bmat that
correspond to zero-valued diagonal elements of vmat. It then flags those
zero-valued elements of bmat as "(omitted)" using the o. operator on the
corresponding column stripe element of bmat. The row and column stripes
of vmat are also updated if the nocheck option is not specified.
nocheck prevents _ms_findomitted from doing anything with the column and
row stripes of vmat. By default, the matrix stripe information in
the columns of bmat must agree with the matrix stripe information in
the rows and columns of vmat.