project "Test" 2008-02-28 +1m {
  extend task {
    reference URL "URL"
  }
}

task a "A A A" {
  task b "B B B" {
    URL "http://www.taskjuggler.org" { label "foo" }
  }
}
task c "C C C" {
  URL "http://www.kde.org"
}

taskreport "reference" {
  formats html
  columns name { celltext plan.URL != '' "[<-URL-> <-name->]" }, URL, start
}