| Returns | 
		The 
		 user visible type 
		
			- TS = Timesheet
 
			- IN = Invoice
 
			- II = Interim invoice
 
			- IF = Interim invoice finalisation
 
			- CN = Credit note
 
			- OB = Explicit opening balance
 
			- OU = Over/under recovery carried forwards
 
			- CA = Credit note recovery adjustment
 
			- WO = WIP written off
 
			- BI = WIP written out (i.e. billed)
 
			- WB = WIP written back into the ledger
 
			- TA = Timesheet adjustment
 
			- AH = Ad hoc WIP posting
 
			- ZZ = Unknown
 
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