There was a time when the sensible way for a respectable business to finance the ups and downs of their developing cash flow requirements was to trip down the bank with their figures and see a friendly Bank Manager who knew them, understood their business and had the discretion to assist them sensibly and proportionately with an overdraft.
There were rules about this. With a long climb up the specialist ladder behind him (mostly a him) he knew how to assess the risk and how to apply the brake when required through monitoring, understanding and sensible appreciation of what the customer was trying to do. To read the full article from Bob Shepherd of Bob Shepherd Associates, click the link. Simple really