// http://download.geofabrik.de/europe.poly
BR.confLayers.europeGeofabrik = {
    "type": "Polygon",
    "coordinates": [
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            [
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            [
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            [
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            [
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            [
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            [
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            [
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            [
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            [
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            ],
            [
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            ],
            [
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            ],
            [
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            ],
            [
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            ],
            [
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            ],
            [
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            ],
            [
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            ],
            [
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            ],
            [
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            ],
            [
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            ],
            [
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            ],
            [
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            ],
            [
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            ],
            [
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            [
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            [
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            ],
            [
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            ],
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            [
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            ],
            [
                45,
                75
            ],
            [
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            ],
            [
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            ]
        ]
    ]
};

// https://planet.osm.ch/switzerland-padded.poly
BR.confLayers.switzerlandPadded = {
    "type": "Polygon",
    "coordinates": [
        [
            [
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                45.90551
            ],
            [
                8.467679,
                45.92433
            ],
            [
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            [
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            [
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            [
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            [
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            ],
            [
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            [
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            [
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            [
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            [
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            ],
            [
                8.63261,
                45.85761
            ],
            [
                8.638899,
                45.82102
            ],
            [
                8.60393,
                45.78804
            ],
            [
                8.586053,
                45.78422
            ],
            [
                8.609555,
                45.74774
            ],
            [
                8.631555,
                45.7349
            ],
            [
                8.625964,
                45.71327
            ],
            [
                8.579137,
                45.71122
            ],
            [
                8.532171,
                45.76848
            ],
            [
                8.524891,
                45.80268
            ],
            [
                8.558807,
                45.84379
            ],
            [
                8.55275,
                45.86345
            ],
            [
                8.512535,
                45.87963
            ],
            [
                8.492869,
                45.90551
            ]
        ]
    ]
};

// osmapa.pl (1017): manually derived from z9-z11, no worldwide tiles >z13, 
// but unclear because of general issues at z14+z15 as of 06/2019
BR.confLayers.osmapaPl = {
    "type": "Polygon",
    "coordinates": [
        [
            [
                25,
                47
            ],
            [
                25,
                56
            ],
            [
                13.5,
                56
            ],
            [
                13.5,
                47
            ],
            [
                25,
                47
            ]
        ]
    ]
};