%CAT Concatenate OptimizationExpressions.
%
%   CAT(DIM,A,B) concatenates the OptimizationExpressions A and B
%   along the dimension DIM.
%   CAT(2,A,B) is the same as [A,B].
%   CAT(1,A,B) is the same as [A;B].
%
%   See also HORZCAT, VERTCAT
