small changes by Soren Larsen
diff --git a/Doc/lib/libunix.tex b/Doc/lib/libunix.tex
index ca4ec97..eca2371 100644
--- a/Doc/lib/libunix.tex
+++ b/Doc/lib/libunix.tex
@@ -1,5 +1,5 @@
 \chapter{UNIX ONLY}
 
 The modules described in this chapter provide interfaces to features
-that are unique to the UNIX operating system, or in some cases to
+that are unique to the \UNIX{} operating system, or in some cases to
 some or many variants of it.