It is explicit: https://www.debian.org/doc/debian-policy/ch-maintainerscripts.html#details-of-configuration https://www.debian.org/doc/debian-policy/ch-maintain

It is explicit: https://www.debian.org/doc/debian-policy/ch-maintainerscripts.html#details-of-configuration https://www.debian.org/doc/debian-policy/ch-maintainerscript... There's also a handy summary in the same policy document: https://www.debian.org/doc/debian-policy/ch-maintainerscripts.html#summary-of-ways-maintainer-scripts-are-called https://www.debian.org/doc/debian-policy/ch-maintainerscript...