Wiki generalized the notion of 'trail' from Folk Memory into a more complete edit history. The first mockup centered the display around avatars.
First mock-up of the page journal.
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The mockup made clear who made which edits.
The current journal requires that the reader read backwards from a fork to see what was contributed by the previous author before the fork took place.
The current author is not represented in the journal as we now know it until the page is forked to a new site.