Introduction
From JMARS Wiki

The JMARS user interface consists of two windows: the Layer Manager (on the left) and the Viewing Window (on the right).
The Layer Manager controls the datasets or analysis tools (called layers) that are loaded into the current session of JMARS. Layers can be viewed with varying resolutions and attributes, which are all controlled by parameters in the focus panel associated with each layer. The focus panels can be accessed by clicking on the appropriate tabs at the top of the Layer Manager.
The Viewing Window displays the visual data associated with the open layers in the Layer Manager. The layered approach allows the simultaneous display of more than one layer. The layers, which users can think of as being stacked on top of each other, are drawn in the Viewing Window in bottom-to-top order. The order of the layers and the transparency of each layer can be adjusted to show features which might otherwise be hidden.
