man/man7/standards.7: Unix/TS: Document Unix/TS 4

Signed-off-by: Alejandro Colomar <alx@kernel.org>

diff --git a/man/man7/standards.7 b/man/man7/standards.7
index 60cd6a445ad75858a6dbaf2f771700c6a1201c74..4b21df5a84798a21c1872661164bf90694daf1fd 100644 (file)
--- a/man/man7/standards.7
+++ b/man/man7/standards.7
@@ -60,13 +60,18 @@ available online
 .UE .
 .SS Unix/TS
 .TP
-.B System V
-This is an implementation standard defined by AT&T's milestone 1983
-release of its commercial System V (five) release.
+.B Unix/TS 4
+This was an internal release of Unix
+that was never released to the public
+(in which case it would have been called System IV).
 The previous major AT&T release was
 .IR "System III" ,
 released in 1981.
 .TP
+.B System V
+This is an implementation standard defined by AT&T's milestone 1983
+release of its commercial System V (five) release.
+.TP
 .B System V release 2 (SVr2)
 This was the next System V release, made in 1985.
 The SVr2 was formally described in the