Who knows the game Cashflow 101, know that it is sometimes a bit annoying to erase in the balance sheet and make changes. These pins can be the sheet lamination and draufschreiben repeatedly with the pins - and correct child's play. Something misappropriated, admittedly, but works brilliantly :-)
(Who does not know Cashflow 101, it should google times, it provides financial professional knowledge without any effort).
