Transparency
You can choose the level of opacity for each layer in order to compare or view the different overlays from sub-bases.
Layer management
The viewer allows to reorder the layers for a flexible vision and to benefit opacity to the maximum.
Multiple sources
It is possible to group several sources of images inside the same layer. The switch is done clicking on the name.
Ex : Google Maps <-> Google Maps (transparent)
Moreover, this feature allows to view the street names upon an aerial view for example.
Distance calculation
The user can measure an approximate distance between the map center (reticulate) and the mouse.
