The Zoom Level Range defines at what scales the mapping layers display. For speed and usability it is important that appropriate zoom level ranges are defined for large datasets.

The zoom levels are preset and range between Level 1, inner most zoom (the largest scale) and Level 20, the furthest zoom out (the smallest scale).

If in doubt, set the zoom level to the lowest value.

Mapping layers out of the zoom range will be greyed-out in the Map Legend.