real</code> has an array dimensionality of 1, <code>int</code> an
array dimensionality of 0, and <code>array [,,] int</code> an array dimensionality
of 3. The implementation type <code>matrix[ , , ]</code> has a total of five
dimensions and takes up to five indices, three from the array and two
from the matrix.</p>
<p>Recall that the array dimensions come before the matrix or vector
dimensions in an expression such as the following declaration of a
three-dimensional array of matrices.</p>
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