Basically, you need to define one Target[] for each of the 8 lines (you could put 2 lines in each target, but it works best with one target per line). You will probably need option 'noo' to disable the second value.
Then you use the routers.cgi*Graph[]: directive to define a userdefined target over all 8. Give the 'total' option and you'll get a total line.
For an example, look in doc/EXAMPLES and see the All_Threads userdefined graph.Statistics: Posted by stevesh — Thu Oct 21, 2004 5:30 pm
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