sm – sevice manual in English, smR – service manual in Russian, smD – service manual in Deutch, smSp – service manual in Spanish, sh – service handbook in English, tr – training, rm – reference manual, pc – part catalogue in English, cd – circuits diagram in English, sb – service bulletin, drv – driver, fw – firmware, um – user manual English, umR – user manual in Russian, ug – user guide, inst – installation procedure in English.
