[MSDN Library June 1998] UnionRect (43.3198380566802%)
MSDN Library Visual Studio 6.0 > Platform SDK > Graphics and Multimedia Services > GDI > Rectangles > Rectangle Reference > Rectangle Functions
[MSDN Library September 1992] UnionRect (39.2528735632184%)
Product Documentation > QuickC for Windows > Windows Programming Reference > Chapter 4 Functions Directory
[MSDN Library September 1992] UnionRect (34.988038277512%)
Product Documentation > Win32 SDK for Windows NT > Programmer's Reference: API (prelim. ) > API Function Reference > U
[MSDN Library September 1992] UnionRect (33.0357142857143%)
Product Documentation > Windows 3.1 SDK > Programmer's Reference Volume 2: Functions > Introduction > UV