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 <span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
 <span style="color: #004080;">sequence</span> <span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">repeat</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"x"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">6</span><span style="color: #0000FF;">)</span>          <span style="color: #0000FF;">?</span><span style="color: #000000;">s</span>
     <span style="color: #000000;">s</span><span style="color: #0000FF;">[$]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">5</span>                        <span style="color: #0000FF;">?</span><span style="color: #000000;">s</span>
     <span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">&=</span> <span style="color: #008000;">'y'</span>                     <span style="color: #0000FF;">?</span><span style="color: #000000;">s</span>
 <span style="color: #000080;font-style:italic;">--  s[2] = s                        ?s</span>
     <span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">2</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">deep_copy</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">)</span>             <span style="color: #0000FF;">?</span><span style="color: #000000;">s</span>
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