When I click results for the demo account that is running it produces a line chart.

Maybe I don't understand how to use it, but there doesn't seem to be any useful info on the chart. I have looked around, but haven't found any tabs which give any details. Am I missing something? I didn't see anything about it in the manual.

The info on that chart is up to your strategy - look under "plot" how to output curves or other useful information.

The Z1/Z2 systems do not plot any curves.