4.4BSD snapshot (revision 8.1); add 1993 to copyright
new doc.mk; document numbering changes for 4.4BSD
Added examples and changed to be appendix A so appendix C is no longer in use.
new copyright; att/bsd/shared
add Berkeley specific copyright notices
Ken Arnold edits for document distributed with 4.3BSD
document distributed with 4.2BSD
document distributed with 4.1BSD