A post can be locked.
- What does it mean to lock a post?
- Who can lock a post?
- When should a post be locked?
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Note: The below answer only applies to posts locked for reasons other than "historical significance". The "historical significance" lock reason works differently, and more info can be found here: What is a historical lock, and what is it used for?
A question or answer which is locked can no longer accept:
In the case of locked questions, the (unlocked) answers are not bounded to these restrictions, with one exception: you must have full editing privileges to edit these answers; suggested edits aren't allowed if the question is locked.
Locked posts can later be unlocked by diamond moderators at any time. Optionally, they can be configured to be automatically unlocked after a certain period of time. Common temporary locking periods are 1 hour, 24 hours, or 1 week.
Only diamond moderators can manually lock or unlock posts. If you believe that a post should be locked, flag it for moderator attention and explain why.
The Community user will lock posts under the following circumstances:
The Community user will unlock posts under the following circumstances:
Posts should generally only be manually locked in cases where something seriously bad is happening. In particular, where the ongoing updates and edits are actively detrimental to the system. A list of reasons moderators can apply when locking a post can be found at https://meta.stackexchange.com/a/172592 (scroll down to "locked").
Some examples of when a post might be manually locked include:
Another type of locked post is a merged question. When a moderator merges two questions that are exact duplicates, all the answers are moved to one question and the other question is left as a "stub," with no answers. The stub question is locked.
If you have a justifiable reason that a post should be unlocked, you should flag it for moderator attention using the "flag" link underneath the post. Select the "other" flag reason, and provide a detailed explanation of your rationale in the textbox provided.
A moderator will review your flag, and if they agree with your arguments, unlock the post.
If a post that was migrated from another site is later locked for any reason, any lock reason notice applied will not be shown, and instead the "migration rejected" notice will be shown, even if it's not actually a rejected migration. This is a rare edge case that the team has decided they won't fix.
Locking a post will prevent it from being automatically deleted by the Community user as part of the Roomba scripts, unless it is locked as a migration stub or a rejected migration.