--- doc/manual.xml.orig	2021-11-01 10:10:24 UTC
+++ doc/manual.xml
@@ -3,14 +3,6 @@
 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
 
-<!ENTITY % isoent SYSTEM
-    "http://www.oasis-open.org/docbook/xml/4.5/ent/isonum.ent">
-<!ENTITY % isopub SYSTEM
-    "http://www.oasis-open.org/docbook/xml/4.5/ent/isopub.ent">
-
-%isoent;
-%isopub;
-
 <!-- date/version stamp files created as release tarball is rolled -->
 <!ENTITY date SYSTEM "date.xml">
 <!ENTITY version SYSTEM "version.xml">
