List worker flags in a more useful manner and note Drain

    <tr><td>status</td>

        <td>-</td>

        <td>Single letter value defining the initial status of

        this worker: 'D' is disabled, 'S' is stopped, 'I' is ignore-errors,

        'H' is hot-standby and 'E' is in an error state. Status 

        this worker.

        <table>

         <tr><td>D: Worker is disabled and will not accept any requests.</td></tr>

         <tr><td>S: Worker is administratively stopped.</td></tr>

         <tr><td>I: Worker is in ignore-errors mode, and will always be considered available.</td></tr>

         <tr><td>H: Worker is in hot-standby mode and will only be used if no other

                    viable workers are available.</td></tr>

         <tr><td>E: Worker is in an error state.</td></tr>

         <tr><td>N: Worker is in drain mode, and will only accept existing sticky sessions

                    destined for itself and ignore all other requests.</td></tr>

        </table>Status

        can be set (which is the default) by prepending with '+' or

        cleared by prepending with '-'.

        Thus, a setting of 'S-E' sets this worker to Stopped and