`supplierreference` mediumtext, -- not used? always NULL
`purchaseordernumber` mediumtext, -- not used? always NULL
`basketno` int(11) default NULL, -- links this order line to a specific basket (aqbasket.basketno)
- `biblioitemnumber` int(11) default NULL, -- links this order line the biblioitems table (biblioitems.biblioitemnumber)
`timestamp` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP, -- the date and time this order line was last modified
`rrp` decimal(13,2) default NULL, -- the replacement cost for this line item
`ecost` decimal(13,2) default NULL, -- the estimated cost for this line item