AeroPkg/assets/var/gnu/docbook4-xml.md

docbook4-xml 4.5

https://www.oasis-open.org/docbook/xml/4.5/docbook-xml-4.5.zip

mkdir -p /pkg/gnu/docbook4-xml/share/xml/docbook/dtd/4.5
cp -rPl * /pkg/gnu/docbook4-xml/share/xml/docbook/dtd/4.5