The "Artifact Links" section of the markdown help doesn't have examples of revision linking. That should be added, as well as any others that are missing. Consider renaming it, since "Artifact" may not be meaningful to people. Then have Rich do a blog post on all the ways it can work.
Diff:
forge:tv/5040
Updates for [#5507] are included in this branch.
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Tickets:
#5507