or scalars, upper and lower bounds for B
%
%   A ...... if Na>0, cell array of A{k} for k=1,...,Na each defining 
%            one matrix constraint; let's assume that A{k} has maximal
%            order maxOrder and has nMat matrices defined, then A{k} should 
%            have the following elements:
%              A{k}.Q - cell array of nMat (sparse) matrices of the same
%                 dimension
%              A{k}.midx - (maxOrder x nMat) matrix defining the multi-indices
%                 f