(TXT) aix.h
 (TXT) dragonfly.h
 (TXT) freebsd.h
 (TXT) hpux.h
 (TXT) linux.h
 (TXT) macosx.h
 (TXT) mswin.h
 (TXT) netbsd.h
 (TXT) next.h
 (TXT) openbsd.h
 (TXT) opensolaris_10_netdb.h
 (TXT) os2.h
 (TXT) qnx.h
 (TXT) sgi.h
 (TXT) solaris.h
 (TXT) sunos.h
 (TXT) windows.h