[MSDN Library April 2000] FM_RELOAD_EXTENSIONS (48.3780560524746%)

MSDN Library - April 2000 > Platform SDK > User Interface Services > Windows Shell > Shell Reference > Shell Messages and Notifications

[MSDN Library June 1998] FM_RELOAD_EXTENSIONS (47.117226139114%)

MSDN Library Visual Studio 6.0 > Platform SDK > User Interface Services > Shell and Common Controls > Windows Shell API > Shell Reference > Messages