X Image Extension
X Image Extension, or XIE are extensions to X Windows system that enhance its graphics capability. They provide a powerful mechanism for the transfer and display of virtually any image on any X-capable hardware. While not intended for use as a general purpose image-processing engine, XIE does provide a robust set of image rendition and enhancement primitives that can be combined into arbitrarily complex expressions. XIE also provides import and export facilities for moving images between client and server, and for accessing images as resources.