def setup_html_filter(portal):
    """Setup HTML filtering for resultsinterpretations
    """
    logger.info("*** Setup HTML Filter ***")
    # bypass the broken API from portal_transforms
    adapter = IFilterSchema(portal)
    style_whitelist = adapter.style_whitelist
    for style in ALLOWED_STYLES:
        logger.info("Allow style '{}'".format(style))
        if style not in style_whitelist:
            style_whitelist.append(style)
    adapter.style_whitelist = style_whitelist
Setup HTML filtering for resultsinterpretations