Navigation

example of multiple navigations, and switching between them

 cd /usr/share/Performer/data/town
 env DTK_SPEW_LEVEL=info DGIPF_DSO_FILES=desktopGroup \
   diversifly --verbose \
   --origin 2567 2393 2 -92 0 0 \
   --near .1 \
   --length .6 \
   --response 8 \
   --far 10000 town_ogl_pfi.pfb