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Leaving out the region will assume all regions, leaving out the tier will assume all tiers, leaving out the type will assume both PlanetLabs and SLAC type landmarks. If the region is included then only landmarks in that region will be used. If the tier is specified then only that tier's landmarks will be used. If the type is specified then only that type landmark will be used. Any or all of the tier, region and type region may be specified as "all".
There is also a debug parameter. Use debug=1 or greater if you want debugging output.
The script uses asynchronous I/O to talk simultaneously with up to 20 landmarks. Up to 5 copies of reflector.cgi can be running simultaneously.
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