Flow is the nano VM graphics server.
To run the graphics demos lines and gfxdemo you have to open two
shells and type this in:

shell 1:$ flow 2000
shell 2:$ nano lines 127.0.0.1 2000

The 127.0.0.1 is the localhost and 2000 is the port number 
If the demos don't run then try another port number.

have some fun!
:)
