	AIX 4.1.[45], 4.2[.1], and 4.3[.123]
	BSDI BSD/OS 2.1, 3.[01], and 4.[01] for Intel-based systems
	DC/OSx 1.1 for Pyramid systems
	DEC OSF/1, Digital UNIX, Tru64 UNIX 2.0, 3.2, 4.0, and 5.0
	FreeBSD 2.1.[67], 2.2[.x], 3.[012], and 4.0 for Intel-based
	    systems
	HP-UX 9.01, 10.20, and 11.00
	Linux 2.0.3[2346], 2.1.x, and 2.2.x for Intel-based systems
	NetBSD 1.[234] for Intel and SPARC-based systems
	NEXTSTEP 3.[13] for NEXTSTEP architectures
	OpenBSD 2.[0123456] for Intel-based systems
	OpenStep 4.x
	Reliant UNIX 5.4[34] for Pyramid systems
	SCO OpenServer Release 3.0 and 5.0.[0245] for Intel-based
	    systems
	SCO UnixWare 2.1.[123] and 7[[.0].1] for Intel-based systems
	Sequent PTX 2.1.9, 4.2.[13], 4.[34], and 4.4[.124] for
	    Sequent systems
	Solaris 2.5.1, 2.6, 7, 8 BETA, and 8 BETA-Refresh
	SunOS 4.1.x
	Ultrix 4.2
