rn, whereas <code>array[] real</code> indicates a one-dimensional array of reals, <code>array[,] real</code> a two-dimensional array and <code>array[,,] real</code> a three-dimensional array; whitespace is optional, as usual.</p>
<p>The dimensions for vectors and matrices are not included, so that <code>matrix</code> is the type of a single matrix argument or return type. Thus if a variable is declared as <code>matrix a</code>, then <code>a</code> has two indexing dimensions, so that <code>a[1]</code> is a 