Shadow
Enable Shadow to choose the kind of drop shadows displayed with products.
A drop shadow shades weather features, making them stand out against the background as
if they were clouds shaded by the sun. You can turn drop shadows o, or choose from three
shadow depths.
Tabulations
IRIS overlays can contain abbreviations or numbers for important places, such as airports,
city centers, and similar.
Select Tabulations to show a menu with the full names for the abbreviations on the screen.
Overlay Layers
Geographic overlays show coastlines, roads, political boundaries and similar. See Overlay
utility in IRIS and RDA Utilities Guide.
Select Overlay Layers to expand the Display Options menu to include the menu shown
above. IRIS overlays are usually constructed in multiple layers so that users can turn on/o
the layers.
After selecting some layers, select Apply to see your changes take eect.
"Virtual Overlays" are names given to dierent combinations of layers. To select a pre-
defined virtual overlay, select the button next to the overlay name and select a new name
from the list.
IRIS Product and Display User Guide M211319EN-H
218 RESTRICTED
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