A professional who files correspondence, cards, invoices, receipts, and other records in alphabetical or numerical order, or according to subject matter, or other system (file clerk i ), searches for and investigates information contained in files, inserts additional data on file records, completes reports, keeps files current, and supplies information from file data. Classifies material when classification is not readily discernible (classification clerk ). Disposes of obsolete files in accordance with established retirement schedule or legal requirements. May copy records on photocopying or microfilming machines. May type labels or reports. May make calculations or use calculating machine to keep files current. May be designated according to material filed.