func Init:java
  fvar(old)
  
  old = block.select((isset(BLK_FUNC) and isndef(Extern)) ? BLK_FUNC : BLK_HEAD)
  println(issec("php") ? '' : 'var ', val, ' = ', Default, ';')
  block.select(old)
end

func doData(_data):java
  fvar(dt)
  dt = Data 
  println('if(', val, ' != ', dt, ') {')
  block.inclvl()
    println(val, ' = ', dt, ';') 
    event(onData, val)
  block.declvl()
  println('}')    
end