dim(MultidimensionalMatrix) -- dimension of a multidimensional matrix

i1 : M = multidimensionalMatrix {{{0, 8, 3}, {7, 3, 2}, {2, 7, 0}, {4, 8, 4}}, {{0, 8, 1}, {3, 1, 0}, {4, 7, 4}, {0, 6, 9}}}
warning: clearing value of symbol x2 to allow access to subscripted variables based on it
       : debug with expression   debug 1368   or with command line option   --debug 1368
warning: clearing value of symbol x1 to allow access to subscripted variables based on it
       : debug with expression   debug 5513   or with command line option   --debug 5513
warning: clearing value of symbol x0 to allow access to subscripted variables based on it
       : debug with expression   debug 6010   or with command line option   --debug 6010

o1 = {{{0, 8, 3}, {7, 3, 2}, {2, 7, 0}, {4, 8, 4}}, {{0, 8, 1}, {3, 1, 0},
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     {4, 7, 4}, {0, 6, 9}}}

o1 : 3-dimensional matrix of shape 2 x 4 x 3 over ZZ

i2 : dim M

o2 = 3