mand.html">HEXISTS</a>  </td><td style="border: 1px solid #aaa; padding: 5px;"> <i>key</i> <i>field</i>  </td><td style="border: 1px solid #aaa; padding: 5px;">  Test for existence of a specified field in a hash  </td></tr><tr><td style="border: 1px solid #aaa; padding: 5px;"> <a href="HdelCommand.html">HDEL</a>  </td><td style="border: 1px solid #aaa; padding: 5px;"> <i>key</i> <i>field</i>  </td><td style="border: 1px solid #aaa; padding: 5px;">  Remove the specified field from a hash  </td></tr><tr><td s