First post of subplot. And posts that related to this thread of the story would be added as a child of this post, rather than as a child of the main story post.
This post may have been written at the same time as a post in the main storyline. But because of its place in the hierarchy it should show up as a child of the Subplot and shouldn't be confused with the reply to the main story with the same name. *fingers crossed*
This is just a test forum post to add to a book.
And it seems to work!