input=.bsf~new("com.sun.syndication.io.SyndFeedInput") 
/*                                                                      creates a SyndFeedInput    */
xmlr=.bsf~new("com.sun.syndication.io.XmlReader", feedUrl) 
/*              Figures out the charset encoding of the XML document within the stream     */
feed= input~build(xmlr) 
/*              Builds a SyndFeedImpl from an Reader , also possible with SAX or DOM       */