Billing:

- Ability to generate bills for all households with outstanding
  balances upon request.  All household information and our company
  letterhead should be produced at the top of the bill.  All of the
  households subscriptions should be on the same bill, with a
  bottom-line total of the amount owed.  Any late charges and expiry
  date for each subscription should be listed as well.  All of the
  transactions since the last time a bill was printed for this
  household should be listed (eg. payments received, new subscriptions,
  etc.)

- A summary sheet should be produced on request with the total owed
  for each publication by all households subscribed.  This should just
  be a list of publications, and the number of subscriptions and total
  amount owed for each.

- When payments are received from households, we need to be able to
  update their record of outstanding balance.

Sales:

- Ability to generate a daily summary information showing how many
  copies of each publication were sold that day.  The number of copies
  sold and the total monetary value should be included.  We would like
  this in two formats:
    - For each publication, a separate sheet listing sales by route,
      with a total at the bottom.
    - A grand-summary sheet with all publications totals, and one
      bottom-line total for the day.