This is not strictly for NetBSD, but about another project named libsoldout: http://fossil.instinctive.eu/libsoldout/home

libsoldout is a markdown converter written in C and published under public domain. There are already other tools which do this (markdown-docbook conversion), but they either have a strange licence or many dependencies.

Your task now is to write a renderer which renders markdown to docbook.

You can take the html, man or html converters from the libsoldout website as an example or template.