Hi everybody, A couple of days ago we released the new Oxygen XML Editor version 19.1 and it's corresponding API SDK. A list with the new available API is listed here: https://www.oxygenxml.com/xml_editor/whatisnew19.1.html#19.1API Among the most useful additions: - A new API callback which notifies you before an XML document is closed so that you can oppose the close operation. - API to add menu items to the contextual menu presented when the end user right clicks an opened XML document's tab. - API to customize the Oxygen Project contextual menu, to add new actions which interpret the project selection in some custom way, for example to add new batch validation engines or external tools or some version control specific actions. We did not make any changes which would break the existing API so existing plugins which work with any older Oxygen version should also work with 19.1. If you have such a plugin and you have any trouble trouble using it with 19.1 please tell us and we'll try to rectify the problem. For developers who customize our WebAuthor in order to build custom online editing solutions, it also has lots of editing and API-related improvements, a list with them can be found here: https://www.oxygenxml.com/xml_web_author/whats_new.html Regards, Radu Radu Coravu <oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger http://www.oxygenxml.com