This package contains the X Extension library from the modular
X.org X11 project.  LibXext provides functions for: Double Buffer
Extension (DBE), Display Power Management Signaling (DPMS), X11
Nonrectangular Window Shape Extension (XShape), shared memory
extensions (XShm), TOG-CUP (Xcup), X11 Extended Visual Information
extension (EVI), X11 Double-Buffering, Multi-Buffering, and Stereo
Extension (Xmbuf).