; padding: 5px;"> - </td><td style="border: 1px solid #aaa; padding: 5px;">  return a random key from the key space  </td></tr><tr><td style="border: 1px solid #aaa; padding: 5px;"> <a href="RenameCommand.html">RENAME</a> </td><td style="border: 1px solid #aaa; padding: 5px;"> <i>oldname</i> <i>newname</i> </td><td style="border: 1px solid #aaa; padding: 5px;">  rename the old key in the new one, destroying the newname key if it already exists  </td></tr><tr><td style="border: 1px solid #aaa; padding: 5px;"