alguien podria ayudarme?

| ||||
http://w3c.org/ http://w3c.org/XML/ http://w3c.org/TR/xmlbase/ http://w3c.org/Encryption/2001/ http://w3c.org/2001/XKMS/ http://w3c.org/XML/Query http://w3c.org/XML/Schema http://w3c.org/Signature/ http://w3c.org/2002/03/tutorials |