ELEMENT TABLE - -     (CAPTION?, (COL*|COLGROUP*), THEAD?, TFOOT?, TBODY+)
ELEMENT CAPTION  - - (%inline;)*     -- table caption
ELEMENT THEAD    - O (TR)+           -- table header
ELEMENT TFOOT    - O (TR)+           -- table footer
ELEMENT TBODY    O O (TR)+           -- table body
ELEMENT COLGROUP - O (COL)*          -- table column group
ELEMENT COL      - O EMPTY           -- table column
ELEMENT TR       - O (TH|TD)+        -- table row
ELEMENT (TH|TD)  - O (%flow;)*       -- table header cell, table data cell