a couple other sunos4 support items removed
diff --git a/Doc/lib/libsun.tex b/Doc/lib/libsun.tex
index 25826cd..1472509 100644
--- a/Doc/lib/libsun.tex
+++ b/Doc/lib/libsun.tex
@@ -2,5 +2,4 @@
 \label{sunos}
 
 The modules described in this chapter provide interfaces to features
-that are unique to the SunOS operating system (versions 4 and 5; the
-latter is also known as Solaris version 2).
+that are unique to SunOS 5 (also known as Solaris version 2).