ISRenderer: how to configure it ? Is it different from ISMask ?

[gcampanile]

The ISRenderer widget shows a configuration pane where you can input some text, but I can't understand if this is to input a custom raster function or so.

Does anyone knows how to configure it ?

Furthermore, there's a new widget (not documented) called ISMask which applies a mask /thus a sort of rendering) to the imagery. What's the difference with ISRenderer ?

Thanks Gianni