One of the vital components in operating systems today is proper driver support, derived from vendor-provided device documentation and brought into shape for the system's driver framework. As an example this screenshot shows Adobe Acrobat Reader (available in the print/acroread package, running in Linux emulation) displaying the DECchip 21143 programmer's manual, some xterms and a vi in which the `tlp' driver is being worked on. The machine this is on is a Dell Inspiron 3500 laptop running i386.

Image contributed by Jason Thorpe <thorpej@NetBSD.org>