<!ENTITY chap-introduction SYSTEM "introduction.xml">
<!ENTITY chap-installation SYSTEM "installation.xml">
<!ENTITY chap-zoom SYSTEM "zoom.xml">
<!ENTITY chap-api SYSTEM "api.xml">
<!ENTITY app-license SYSTEM "license.xml">
<!ENTITY chap-introduction SYSTEM "introduction.xml">
<!ENTITY chap-installation SYSTEM "installation.xml">
<!ENTITY chap-zoom SYSTEM "zoom.xml">
<!ENTITY chap-api SYSTEM "api.xml">
<!ENTITY app-license SYSTEM "license.xml">