hypview:  3D hyperbolic graph layout

potential future features
connect w external data srcs
point directly to cisco BGP feed
netflow
skitter
netgeo
routing registries
color, thickness, height of link/node by: 
country, #routes, traffic, delay, damage
drill-down 
click to pop up info about nodes, links
GUI to filter matching (unclear need)
`draw all paths thru this AS [&|to this prefix]'
`draw all paths > X [traffic|delay|routes]'
`draw all paths through ATM infrastructure'
`draw all paths not taking shortest paths'