This header (till an empty line) will get printed
a second header line

this is no header, just a comment

2008-03-01  10.34  computershop  (hardware)
2008-03-04   1.00  cheap-hardware (hardware)

2008-04-08   5.31  cheap-hardware  (hardware)
2008-04-12  14.99  software-store  (software)
2008-04-28  50.00  computer-freak  (support)