In order to avoid conflicts1) when multiple users try to edit the same page at the same moment, DokuWiki locks the pages you are editing.
If a page is currently edited by another user, you will see a 'Page locked' message which indicates who is editing the page and when the lock will expire.
A page lock is set for a time given by the locktime option. Locks are refreshed :
Preview button is pressed, the age of the lockfile is reset, so if more than 15 minutes for editing is needed just press Preview from time to timeLocks do expire when :
If you edit a page, a JavaScript alert reminds you about the expiring lock one minute before it expires.
Lockfiles contain the IP address (or username if available) of the one who edits a page - This means users can not lock pages from themselves.