MIT/GNU Scheme supports graphics in the X window system (version 11).
Arbitrary numbers of displays may be opened, and arbitrary numbers of
graphics windows may be created for each display. A variety of
operations is available to manipulate various aspects of the windows, to
control their size, position, colors, and mapping. The X graphics
device type supports images, which are implemented as Xlib XImage
objects. X display, window, and image objects are automatically closed
if they are reclaimed by the garbage collector.