Agent number, agent name, customer number, first name, last name, address
line 1, address line 2, city, state, zip, invoice date, invoice number,
-amount charged, amount due,
+amount charged, amount due, previous balance, due date.
and then, for each line item, three columns containing the package number,
description, and amount.
} elsif ( $format eq 'oneline' ) { #name
my ($previous_balance) = $self->previous;
+ $previous_balance = sprintf('%.2f', $previous_balance);
my $totaldue = sprintf('%.2f', $self->owed + $previous_balance);
my @items = map {
($_->{pkgnum} || ''),
$self->invnum,
$self->charged,
$totaldue,
+ $previous_balance,
+ $self->due_date2str("%x"),
@items,
);