def allowed_xml_tag_fragments():
    """
    tuples of whitelisted tag startswith values for matching tags found in inline text
    prior to being converted to HTML
    values can be a complete tag for exact matching just the first few characters of a tag
    such as the case would be for mml: or table td tags
    """
    return ('<p>', '</p>', '<p/>', '<break>', '</break>', '<break/>',
        '<underline>', '</underline>', '<underline/>', '<italic>',
        '</italic>', '<italic/>', '<bold>', '</bold>', '<bold/>',
        '<monospace>', '</monospace>', '<monospace/>', '<sc>', '</sc>',
        '<sc/>', '<sup>', '</sup>', '<sub>', '</sub>', '<email', '</email',
        '<ext-link', '</ext-link', '<xref', '</xref', '<inline-graphic',
        '</inline-graphic', '<inline-formula', '</inline-formula', '<math',
        '</math', '<mml:', '</mml:', '<named-content', '</named-content',
        '<table', '</table', '<thead', '</thead', '<tbody', '</tbody',
        '<th', '</th', '<tr', '</tr', '<td', '</td')
