install-catalog --add /etc/sgml/catalog /usr/share/docbook-sgml/docbook.cat
#mkdir $SOURCE_DIRECTORY
#cd $SOURCE_DIRECTORY
#wget http://docbook.sourceforge.net/release/dsssl/current/doc/testdata/test.sgmi
#export SGML_CATALOG_FILES=/usr/share/docbook-sgml/docbook.cat
#nsgmls -sv /usr/share/docbook-sgml/docbook.dcl test.sgm
