Construit avec : 

https://contrib.spip.net/Tutoriel-Masquer-ou-ajouter-des-raccourcis-dans-le

https://contrib.spip.net/Porte-Plume-documentation-technique

https://programmer.spip.net/-Developper-des-plugins-

https://contrib.spip.net/Creation-d-un-plugin

https://contrib.spip.net/Ecrire-la-documentation-d-un-plugin-SPIP

https://marcimat.magraine.net/Chats-2-SPIP-3

https://www.spip.net/fr_article5414.html

https://discuter.spip.net/t/turotiel-masquer-ou-ajouter-des-raccourcis-dans-le-porte-plume/162136/2

V1.1   ajout de l'outil centrer