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Semantic Extra Special Properties

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Semantic Extra Special Properties (a.k.a. SESP) is an extension to Semantic MediaWiki which adds some extra special properties to enabled content pages.



The recommended way to install Semantic Extra Special Properties is by using Composer with an entry in MediaWiki's composer.json.

```json { "require": { "mediawiki/semantic-extra-special-properties": "~1.5" } } ```

  1. From your MediaWiki installation directory, execute composer require mediawiki/semantic-extra-special-properties:~1.5
  2. It is strongly recommended to rebuild existing semantic data and run Semantic MediaWiki's rebuild data process.
  3. Navigate to Special:Version on your wiki and verify that the package have been successfully installed.


The annotation process for predefined properties is mostly done in the background and therefore doesn't need any special interaction from a user but `LocalSettings` for SESP need to be enabled.

For details about available settings, please have a look at the docs/ "configuration" document.

Contribution and support

If you have remarks, questions, or suggestions, please send them to You can subscribe to this list here.

If you want to contribute work to the project please subscribe to the developers mailing list and have a look at the / "contribution guildline". A list of people who have made contributions in the past can be found here.


This extension provides unit and integration tests that are run by a continues integration platform but can also be executed using composer phpunit from the extension base directory.


GNU General Public License 2.0 or later