_('tk')
	('does:','text:', 's | HTML("element:","span")("contains:", s, 0, s.length)')
	('does:','image:', 'u | HTML("element:","img")("src:",u)')
	('does:','sound:', 'u | HTML("element:","audio")("src:",u)')
	('does:','video:', 'u | HTML("element:","video")("src:",u)')
	('does:','box:', '| HTML("element:","div")')