<!ENTITY configurations                 SYSTEM "Configurations.docbook">
<!ENTITY configurations-dialup          SYSTEM "Configurations/Dialup.docbook">
<!ENTITY configurations-dialup-intro    SYSTEM "Configurations/Dialup/intro.docbook">
<!ENTITY configurations-dialup-usage    SYSTEM "Configurations/Dialup/usage.docbook">
<!ENTITY configurations-dialup-modem    SYSTEM "Configurations/Dialup/modem.docbook">
<!ENTITY configurations-dialup-server   SYSTEM "Configurations/Dialup/server.docbook">
<!ENTITY configurations-dialup-client   SYSTEM "Configurations/Dialup/client.docbook">