Null edit

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null edit is opening Wiki page for edits and saving it without making any changes.

It can be useful as it will force to recalculate page and purge caches - what will matter if changes to some templates or data items were made and are not reflected on the page.

For example if "requires" field in infobox was empty and some incorrect value was displayed due to data item being incorrect, it is necessary to edit given data item and make a null edit to force refresh.

See also https://www.mediawiki.org/wiki/Manual:Purge