array of watches.
    </dd>

    <dt> 64</dt>
    <dd>
-- Character string too long. This occurs when a watch name with more
   than 132 characters is passed into <b> create_watch</b>
   .</dd>

    <dt> 128</dt>
    <dd>
-- Watch not found in given group. This occurs when you attempt to remove
   a watch from a group that it does not belong to.
    </dd>

    <dt> 256</dt>

    <dd>
-- I/O unit is not open for writing. This can occur from <b>
   print_watch</b> or when printing an error message.</dd>

    