This guide cut the number of letters that had to be answered down to manageable size - a few each day for Jill, seldom even one for Mike.  Just opening the mail took a major effort, but Jill found that she could skim and classify in about one hour each day, after she got used to it.  The first four categories remained large at all times; category "G" was very large during the fortnight following the world stereocast from the Palace, then dwindled and the curve flattened to a steady trickle.