* Fixed: bugs in export to GPX format;
* Fixed: 'memory leak' bug with big maps;
* Improved: algorithm of map snapping;
* Added: datum support for maps;
* Added: copyright field in map format;
* Added: password for map editing;
* Added: device manager, now MapEditor can copy maps from PC to device;

A map consists of several layers, each layer has different level of detailed elaboration of shown information. One layer is enough to create a map. Layer - is a picture in raster format. You can use scanned maps in following formats as source files : *.jpeg, *.jpg, *.bmp, *.ico, *.wmf (recommended format - *.bmp).

Each layer should be obligatory snapped to geographical coordinates (WGS-84). It's recommended to use 2-5 points measured with high level of precision in order to snap a map.
To define snap points on a layer you should use a tool "Make Snap". You should snap a layer after defining snap points: Layers / Snap layer.

Note: After that you can also calibrate a map on your device, but it's recommended to snap a map to some well-known coordinates.

How to snap a map?

1. Launch MapEditor;
2. Create a new map;
3. In Map Properties dialog (Menu -> File -> Map properties) set datum corresponding to your map. E.g., if NAD-83 datum is indicated on your scanned map, you should set this particular datum. Note: the same datum is used for all layers of a map.
4. Close Map Properties dialog;
5. Add a new layer (Menu -> Layers -> Add Layer);
6. Select a tool "Make snap" on the toolbar and create snap points on the layer. There must be at least two snap points for each layer;
7. Snap a layer (Menu -> Layers -> Snap Layer);
8. Save the map.

If there is more than 1 layer in your map, repeat steps 5 - 8.
Note: Every layer is snapped independently from the others. That's why snap points will be different for every layer.

Screenshots: