NMAP2 provides multiple loop frames, or briefing windows, for
displaying GEMPAK products (currently 16 windows). The loop frame may be selected
from the main Display panel using the loop frame selector widget,
or by using the F-keys on the standard keyboard when the display pointer is within
the graphic window. Each frame corresponds to the F# pressed (windows 1 through 8,
shift+F# for windows 9 through 16). The loop frame may also be selected from the
data selection window.
