[MSDN Library June 1998] UnlockFile (40.61004784689%)
MSDN Library Visual Studio 6.0 > Platform SDK > Windows Base Services > Files and I/O > File I/O > File Reference > File Functions
[MSDN Library April 2000] UnlockFile (39.4736842105263%)
MSDN Library - April 2000 > Platform SDK > Base Services > Files and I/O > File I/O > File I/O Reference > File I/O Functions