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ALERT! NOTE: This is a HistoricalDocument topic. It used to be distributed in an earlier TWiki release, but is no longer part of the official TWiki distribution. Post questions, error notes, and suggestions concerning the documentation of this topic in the comments section below! Use the Support web for problems you are having using TWiki.

Topics get locked for some time (default is one hour) whenever a user edits, previews or saves a topic. This is to prevent simultaneous topic updates. There is a lock warning if another user tries to edit a topic while the lock is still on.

It is worth noting that all topic changes you do within the lock time will go into the same revision. In other words, if you find a mistake immediately after saving the topic, then TWiki will pretend that it never happened if you fix it within the topic lock time.

You can remove the lock by checking the "Release edit lock" checkbox in preview. This is a way to let other people know that you are done with your editing.


  • Please remember not to go back in your browser in case you checked the box and after that you decide to do more changes to the topic. Instead press the Edit link to re-edit your page.
  • The initial state of the checkbox can be set to on with the RELEASEEDITLOCKCHECKBOX preferences variable. See TWikiPreferences for more.
  • The time for which topics are locked is set in the lib/TWiki.cfg file property editLockTime.

Comments & Questions about this Historical Document Topic

I don't think the statement in the second paragraph is 100% accurate (unless things have changed) — IIRC, you can not "force" a new revision by unlocking the topic but must wait for the one hour timeout to occur (which is reset at events like save, edit, preview, ... ??). If I'm wrong, delete this note. If I'm (almost) right, please correct the page appropriately (and delete this note). (If you consider this too much detail for this page, maybe include a link to something like UnlockTopic_AdvancedHelp?

-- RandyKramer - 26 Aug 2004

The statement is correct but does not mention the detail you pointed out. I changed the wording a bit. The doc would be too confusing if we go into that level of detail.

-- PeterThoeny - 26 Aug 2004

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Topic revision: r9 - 2006-01-30 - PeterThoeny
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