question: public String source_locations_xref ( Method m ) { String out = "" ; List < SourceLocationTag > locs = m . getLines ( ) ; for ( SourceLocationTag loc : locs ) { String cname = loc . getClz ( ) ; int line = loc . getLine ( ) ; out += String . format ( "<a href=%s#%d class=code target=%s> %s:%d</a><br>" , app_source_path ( cname ) , line , TARGET , cname , line ) ; } return out ; }
target:  Returns cross references for each line where m is called in the  application.  Each cross reference is on a separate line