That's great, I can live without a second axis for a while but when you add it, it would be great.
I suppose I could convert the data to logs and then plot it, then I wouldn't need the log scale on the chart. I would just need to label the axis accordingly.
Another thing I couldn't seem to find were gridline options. I tried to use the watermark as a substitute for gridlines, but it looks like you can only put one watermark band on a chart. If I could put more than one watermark band on a chart then it could work great as a substitute for horizontal gridlines. Any possibility of adding that option?