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The new Versions feature in Lion stores old versions of the document I'm working on in case to revert back to some older version of the document. However, how can I delete the version files for a given document?

There're hidden files in the /.DocumentRevisions-V100, but I'm afraid I cannot just simply delete that folder.

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For the answer to this question in Mavericks, Yosemite, and beyond, read this Q&A or jump straight to Apple Support. – duozmo Mar 1 '15 at 17:18
up vote 5 down vote accepted

If you want to delete old versions from a document directly:

  1. Click besides the document name in the window title to access the version history
  2. Time-machine like view opens, with document history on the right hand side
  3. Clicking on the same menu as in step 1 in a history version will allow you to delete just this version
  4. Option-Clicking will allow you to delete all history versions at once
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Fantastic, this way can delete individual version – kukoo Sep 30 '11 at 0:38
Very sweet! And I've been juggling things in the dark. Awesome info. – bmike Sep 30 '11 at 14:10
How to safe delete versions? How should I assure that after I deleted the versions?—Should I ask that as a separate question? – Adam L. S. Jun 10 '12 at 22:35
@AdamL.S. please ask a separate question for this – patrix Jun 11 '12 at 5:35

When you trash a document, the system cleans up all of the versions at the same time.

I have been copying that document elsewhere (another drive), deleting the one with history, and then copying it back.

Also, from the app, if you have a Duplicate or Export option in the File menu, that will spawn off an unversioned copy that you can then save.

In practice, it's never been an issue since when I drag a file to export or upload, these Lion versions don't travel with the document - they only take up marginal space on my HD and help me with the history of each document.

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Thanks, tried and it works as your said. – kukoo Sep 29 '11 at 13:21

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