Currently the input loop default behavior is to reuse any fields that were input in a previous line that are not input in the current line. (eg, so I don't have to enter the quizname over and over again when entering scores).  But I found that I *never* want to reuse the comment field, so I changed the loop to drop the comment field from the dictionary of current values after each line is output to the .txt file.  This seems hacky to me, but it does work.