People good in English will sees it fastly, I’m not a good english-speaker (or writer) because I’m French, so, please forgive my mistakes.
As an active OSM contributor (here is my profil), I’m interested by OHM for the historic wealth potential that can have this project.
My interest for this forum is first, logically, to find here the answers of my questionnement, but also to established some consensus about the way to do some things (like to map the dates).