[mrtg] line instead of green

[Steve Shipway]

> I want to replace the (default) filled green graph by just a line
(like
> the blue one. Which option should I look for in the reference manual?

You can do this if you are using the routers2 frontend for MRTG/RRD, but
I don't think it is possible with standard MRTG.  To do it in routers2,
define a userdefined graph using just the one Target, and it will have 2
lines by default.  Conceal the 'real' graph using the
routers.cgi*InMenu[]:no directive.

Steve