If I display in my code, with control space, the system messages, a lot of full stop are missing in message and there are spaces before the colon (which is not the case by default):

   on_remove = You take off ${entity}
   on_wear = You wear ${entity}
   exit_list_header_concise = Exits :\s
And others.

Fixed in next update.

I fixed all those myself. There were quite a few that needed fixing. I also recall an issue with one or two messages not working with both singular and plural objects. From memory, it might have been "nothing_to_get = You look around but can't see a ${noun} anywhere." I changed "a" to "any", so rather than saying "You look around but can't see a apples anywhere.", it now says "You look around but can't see any apples anywhere." This also works with a singular apple.