/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: amparoprieto35 https://cdn.slidesharecdn.com/profile-photo-amparoprieto35-48x48.jpg?cb=1523408702 No tinc ni idea de com funciona això, però vaig tocant i suposo que aprendré o no.