A play is a sequence, but not used to build a list, it is used to exucute on a sequence list.

<p>There are 4 play operators

<table border=1>


  <tr>
    <td> make </td>
    <td> Make all entries of a sequence list that sequence     </td>
  </tr>

  <tr>
    <td> keep </td>
    <td> Keep sequence list entries that are that sequence     </td>
  </tr>

  <tr>
    <td> remove </td>
    <td> Remove sequence list entries that are that sequence     </td>
  </tr>

  <tr>
    <td> flag </td>
    <td> Flag each sequence list entry with 1 when it is that sequence, else 0     </td>
  </tr>


</table>

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  <tr>
    <td>

<p> 
  <table border="1" cellpadding="10" cellspacing="0">
    <tr>
      
      
      
      <th bgcolor="#dddddd">HTML</th>
      <th bgcolor="#dddddd">RESULT</th>
    </tr>
    

<tr><td style="vertical-align:top"><!-- START DEMO SOURCE --><pre><code style="color: #000000"><b>{<font color="blue">sequence </font><font color="red">range=<font color="black">'</font>20..30<font color="black">'</font><font color="black">,</font> push=<font color="black">'</font>mySequence<font color="black">'</font></font>}</b></code></pre><!-- END DEMO SOURCE --></td><td style="vertical-align:top"><code><span style="color: #000000"><!-- START DEMO RESULT --><!-- END DEMO RESULT --></span></code></td></tr>

<tr><td style="vertical-align:top"><!-- START DEMO SOURCE --><pre><code style="color: #000000"><b>{<font color="blue">pull </font><font color="red">mySequence<font color="black">,</font> make<font color="black">,</font>   prime</font>}</b> <b>{<font color="green"><font color="red">$</font>sequence</font>}</b> <b>{/<font color="blue">pull</font><font color="red"></font>}</b></code></pre><!-- END DEMO SOURCE --></td><td style="vertical-align:top"><code><span style="color: #000000"><!-- START DEMO RESULT -->71  73  79  83  89  97  101  103  107  109  113<!-- END DEMO RESULT --></span></code></td></tr>

<tr><td style="vertical-align:top"><!-- START DEMO SOURCE --><pre><code style="color: #000000"><b>{<font color="blue">pull </font><font color="red">mySequence<font color="black">,</font> keep<font color="black">,</font>   prime</font>}</b> <b>{<font color="green"><font color="red">$</font>sequence</font>}</b> <b>{/<font color="blue">pull</font><font color="red"></font>}</b></code></pre><!-- END DEMO SOURCE --></td><td style="vertical-align:top"><code><span style="color: #000000"><!-- START DEMO RESULT -->23  29<!-- END DEMO RESULT --></span></code></td></tr>

<tr><td style="vertical-align:top"><!-- START DEMO SOURCE --><pre><code style="color: #000000"><b>{<font color="blue">pull </font><font color="red">mySequence<font color="black">,</font> remove<font color="black">,</font> prime</font>}</b> <b>{<font color="green"><font color="red">$</font>sequence</font>}</b> <b>{/<font color="blue">pull</font><font color="red"></font>}</b></code></pre><!-- END DEMO SOURCE --></td><td style="vertical-align:top"><code><span style="color: #000000"><!-- START DEMO RESULT -->20  21  22  24  25  26  27  28  30<!-- END DEMO RESULT --></span></code></td></tr>

<tr><td style="vertical-align:top"><!-- START DEMO SOURCE --><pre><code style="color: #000000"><b>{<font color="blue">pull </font><font color="red">mySequence<font color="black">,</font> flag<font color="black">,</font>   prime</font>}</b> <b>{<font color="green"><font color="red">$</font>sequence</font>}</b> <b>{/<font color="blue">pull</font><font color="red"></font>}</b></code></pre><!-- END DEMO SOURCE --></td><td style="vertical-align:top"><code><span style="color: #000000"><!-- START DEMO RESULT -->0  0  0  1  0  0  0  0  0  1  0<!-- END DEMO RESULT --></span></code></td></tr>


  </table>
</p>


</td>
  </tr>
</table>