`chargeperiod` int(11) default NULL, -- how often the fine amount is charged
`chargeperiod_charge_at` tinyint(1) NOT NULL DEFAULT '0', -- Should fine be given at the start ( 1 ) or the end ( 0 ) of the period
`accountsent` int(11) default NULL, -- not used? always NULL
- `maxissueqty` int(4) default NULL, -- total number of checkouts allowed
- `maxonsiteissueqty` int(4) default NULL, -- total number of on-site checkouts allowed
`issuelength` int(4) default NULL, -- length of checkout in the unit set in issuingrules.lengthunit
`lengthunit` varchar(10) default 'days', -- unit of checkout length (days, hours)
`hardduedate` date default NULL, -- hard due date