-<!ENTITY bookinfo SYSTEM "bookinfo.xml">
-<!ENTITY chap-introduction SYSTEM "introduction.xml">
-<!ENTITY chap-installation SYSTEM "installation.xml">
-<!ENTITY chap-zoom SYSTEM "zoom.xml">
-<!ENTITY chap-asn SYSTEM "asn.xml">
-<!ENTITY chap-soap SYSTEM "soap.xml">
-<!ENTITY chap-tools SYSTEM "tools.xml">
-<!ENTITY chap-odr SYSTEM "odr.xml">
-<!ENTITY chap-comstack SYSTEM "comstack.xml">
-<!ENTITY chap-server SYSTEM "server.xml">
-<!ENTITY chap-future SYSTEM "future.xml">