<?xml version="1.0" encoding="iso-8859-1"?>

<!ENTITY os-linux "<emphasis>GNU/Linux</emphasis>">
<!ENTITY gpl "<acronym>GPL</acronym>">
<!ENTITY gfdl "<acronym>GFDL</acronym>">
<!ENTITY ps "<acronym>PS</acronym>">
<!ENTITY cvs "<acronym>CVS</acronym>">
<!ENTITY docbook "<literal>DocBook</literal>">