2.0 http://www.w3.org/2005/Atom Groupdocs API References – SavingCallback https://reference.groupdocs.com/Editor/net/groupdocs.Editor.options/htmlsaveoptions/savingcallback/ Recent content in Savin......com/editor/net/groupdocs.editor.options/htmlsave...https://reference.groupdocs.com/editor/net/groupdocs.editor.options/htmlsave...