module F:Typed interface for building valid SVG tree (functional semantics). See .Svg_sigs.Twith type Xml.uri = Xml.uri and type Xml.event_handler = Xml.event_handler and type Xml.attrib = Xml.attrib and type Xml.elt = Xml.eltwith type 'a elt = 'a elt and type 'a attrib = 'a attrib and type uri = uri