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