'Return a table of *width* having *rows* rows and *cols* columns,
newly appended to the content in this container. *width* is evenly
distributed between the table columns.'

def add_table(self, rows, cols, width):

    from .table import Table
    tbl = CT_Tbl.new_tbl(rows, cols, width)
    self._element._insert_tbl(tbl)
    return Table(tbl, self)
