Yes, there is a feature for doing precisely this, and another one for finding matching texts within other larger texts (so, better for finding quotes and snippets). For full 1:1 duplicates:
- Run a project search for a single asterisk (*). This is a special wildcard that means: give me a list of everything with content.
- Click on the magnifying glass to the left of the search field and set the scope at the top to “Text”. Now we are just finding items with main text content.
- Lastly, select the “Find Duplicates” option, toward the very bottom of this list.
As you might expect you can refine this, and use the setting in combination with other settings. Searching for a word would only find duplicates that also contain that word, for example. Setting the scope to “Title” would help you find duplicate binder titles.
The other feature I referred to is documented in the user manual, under §13.4.4, Matching Text Finder, pg. 328. But you’ll probably want to scroll up a bit for context, as this is a mode buried in the inspector.
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Moderator Note: moved to the technical support forum. You were posting in a board for sharing tips on how you use Scrivener.