Yes, as soon as the file is modified, I'd just hit close and select yes in the save dialogue, that way, it would save the original.tgd that you opened, instead of as a new text doc. The line count display is only to direct you to the offending line, don't leave it displayed when closing and saving the file. I think there are instructions to remove the line count display after the instructions on how to display them, on the above page.