document.write(" BSD
")
document.write(" Cisco
")
document.write(" Compaq
")
document.write(" Free BSD
")
document.write(" Hewlett Packard
")
document.write(" IBM
")
document.write(" Debian
")
document.write(" Red Hat
")
document.write(" Microsoft
")
document.write(" Novell
")
document.write(" Open BSD
")
document.write(" SCO
")
document.write(" Silicon Graphics
")
document.write(" Sun Microsystems
")