The place to start would be to look at formatting your information using an Expression component and then streaming that information to an outside file (using the excel exporter, or one of the other file types that Grasshopper supports.
For example, let's say I had a list of circles and a list of radii that I wanted to format and export to a text file or something…
I would use an expression component and input a list of indeces for variable a and the list of radii in for variable b
My expression would read as follows (in the Expression editor):
Format ("Circle {0}: Radius: {1}", a, b)
This gives me a list of strings that will read
Circle 1: Radius: 0.55
Circle 2: Radius: 0.62
Circle 3: Radius: 0.77
….. etc.
For some reason, I can't upload a file from my network at work… I will upload some examples when I get home. This works well with 1-dimensional lists… I will investigate lists with data trees tonight.
-Nate