Control field is a check code CRC16 ITU standards, and I hope useful

CRC16
.....\CRC16.APS
.....\CRC16.clw
.....\CRC16.cpp
.....\CRC16.dsp
.....\CRC16.dsw
.....\CRC16.h
.....\CRC16.ncb
.....\CRC16.opt
.....\CRC16.plg
.....\CRC16.rc
.....\CRC16Dlg.cpp
.....\CRC16Dlg.h
.....\ReadMe.txt
.....\res

.....\...\CRC16.rc2

.....\Resource.h
.....\StdAfx.cpp
.....\StdAfx.h

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