diff --git a/doc/index.docbook b/doc/index.docbook
--- a/doc/index.docbook
+++ b/doc/index.docbook
@@ -25,6 +25,9 @@
 <!ENTITY krusader 'Krusader'>
 <!ENTITY kapp "&krusader;">
 <!ENTITY kappname "&krusader;">
+<!ENTITY NFS   "<acronym>NFS</acronym>">
+<!ENTITY USB   "<acronym>USB</acronym>">
+<!ENTITY Samba "<application>Samba</application>">
 <!-- <!ENTITY % addindex "IGNORE"> -->
 <!ENTITY % addindex "INCLUDE">