OK, good point. 

Are you saying that you agree the jitter level of the signal reaching the DAC is irrelevant though?   My naive interpretation of your comments on the transport thread would make you think you wouldn't.  Perhaps this should be left for the other thread though.  Although, if it were true, then if the green ink didn't affect bit accuracy (which I don't think it would), then that would mean the pen couldn't do anything...  Oh, unless it affected the electrical noise transferred to the DAC with the signal guess.