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Internal class for formatting output data in html.
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and this class responsible for only producing html markup.
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the value of min-width.
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----------
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s : object
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The data to be written inside the cell.
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header : bool, default False
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Set to True if the <th> is for use inside <thead>. This will
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cause min-width to be set if there is one.
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indent : int, default 0
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The indentation level of the cell.
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