"Twinned" are basically two stories intertwined in a book project.
The purpose of the online version is only to give an idea of what is the book about to those who do not have it, or to allow those who have not to damage it.
Since there are two stories
there are two storylines.
By following only yellow arrowheads:
the reader will get what is "the outside story" of the book.
By following in turn red letter openers:
and yellow arrowheads:
the reader will get the complete story.
(It's really not as complicated
as it might seem.)
If anyone is interested in having a copy of the actual book, contact us and we'll see what can be done.