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Add 'file1' 'file2' [-x] -l=n1 -r=n2 -n=n3file1: matrix_TYP
-x:    Calculates all possible sums of matrices of file1
       with file2.
       If this option is not present, the programm adds the
       i-th matrix of file1 to the i-th matrix of file2
 
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