I find this very useful:
- Copy a link to a particular paragraph in FT3 (Atom > Edit > Copy Path), and
- add it to a DevonThink database as a bookmark (Data > New > Bookmark)
DevonThink shows a preview, and clicking on the live URL at the top of the preview takes you straight to the FT3 file.
( Writing an ft3doc:// handler would enable selecting the target paragraph )