@register.tag(name="show_page")
def show_page(parser, token):
    try:
        tag_name, page_name = token.split_contents()
    except ValueError:
        raise template.TemplateSyntaxError("%r tag requires a single argument" % token.contents.split()[0])
    return ShowPageNode(parser.compile_filter(page_name))
L{Element.render} loads a document from the C{docFactory} attribute and
dataset/ETHPy150Open niwinz/niwi-web/src/niwi/web/templatetags/utils.py/show_page--crossover with--dataset/ETHPy150Open twisted/nevow/nevow/test/test_element.py/ElementTests.test_render