re><code> real a[5,6];
 real b[3,4,5,6];
 
 b = rep_array(a,3,4); //  make (3 x 4) copies of a
 b[1,1,1,1] = 27.9;    //  a[1,1] unchanged</code></pre>
<p>After the assignment to <code>b</code>, the value for <code>b[j,k,m,n]</code> is equal to
<code>a[m,n]</code> where it is defined, for <code>j</code> in <code>1:3</code>, <code>k</code> in <code>1:4</code>, <code>m</code> in
<code>1:5</code>, and <code>n</code> in <code>1:6</code>.</p>
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