return function(app,argv)
  print("help!")
  foreach( app.opts, function(k,v)
    if not k:match("/") and not k:match("^help") then
      print( app.bin .. " -- " .. k .. "=...\t # '" .. v .. "' e.g." )
    end
  end)
  foreach( app.cmd, function(k,v)
    print( app.bin .. " -- " .. k .. "\t\t # " .. v.info )
  end)

  os.exit()
end