Special Functions Utility keypad Over the years Caliach has found that there are occasions where powerful features are appropriate to use where often they would normally be highly dangerous and not generally provided. Caliach Vision features a number of these of these in a utility accessible only to authorised users. Part numbers can be changed and characters in all part numbers can be replaced. Facility to change units of measure where all related quantities must be factored. Function to delete a part with all associated history. Powerful feature to make global changes to general ledger account codes that enables G/L restructuring. Direct database writing is provided in the rare event of underlying data errors caused by network or machine failure. 048