my %port_para;
$port_para{prio1}{count} = 0;
$port_para{prio1}{name} = "";
$port_para{prio1}{lat} = 0;
$port_para{prio1}{lon} = 0;

...

my %config=(
  render_poi_size_prio1=>1,
  render_poi_size_prio2=>0.75
);