There is a typographical error on the back cover of the OpenBSD 4.5 CD set. It says
"This package contains the operating system and a selection of applications for the i386, macppc, amd64, sparc, and sparc64 architectures." This is incorrect, because the CDs do not contain the operating system or applications for the sparc architecture. This error was also on the OpenBSD 4.4 CD set. See http://marc.info/?l=openbsd-misc&m=122412019502133
