elements['svg'].valid_attributes = frozenset(svg_attributes)
g_attributes = set(elements['g'].valid_attributes)
g_attributes.add('inkscape:groupmode')
g_attributes.add('inkscape:label')
elements['svg'].valid_attributes = frozenset(svg_attributes)
g_attributes = set(elements['g'].valid_attributes)
g_attributes.add('inkscape:groupmode')
g_attributes.add('inkscape:label')