To manipulate the registry, the programs must use the special functions in Windows API, while a normal text file, you may be drawn with the normal functions of file manipulation. This obligation extends to users who need to access the registry using the program regedit.exe
Registry | Part 3
A primary tool for editing the registry appeared with Windows 3.1, named publisher of the registration information (Registration info editor, the English version), Regedit.exe, the main purpose of this program was to change groups of files and records of OLE components.
Registry | Part 2
The registry, although only a few users are aware of them, dates back to before Windows 95: its first implementation dates back to Windows 3.0, from which it has evolved over the years (and with various versions of Windows) to His most recent incarnation, that of Windows Vista.