MXSTACK mat mat1 mat2 mat3….
Outputs a “stacked” matrix mat.ufm, built from the input matrices mat1.ufm, mat2.ufm, etc. etc. in order. The list of input matrices may contain up to 8 inputs (and clearly must have at least two in order to make sense).
Note that the input matrices may be either square or internally stacked themselves. Thus if there are 3 input matrices, each with 4 levels, then the output matrix will consist of 12 levels.
N.B. The matrices are stacked “vertically” in levels, as appropriate for user classes; cf MXBLOCK.
To stack more than 8 matrices see either STACK (10.20.11) or UFMSTACK (10.20.17).