Plural versions of an authoring/editing tool for fluid text include both a WYSIWYG editor and a content-driven treeable editor for producing narratives and their behavioral control in a fluid text viewing system environment. The tool includes content-driven treetable visualization and a layout mechanisms...http://www.google.co.uk/patents/US20060253482?utm_source=gb-gplus-sharePatent US20060253482 - Authoring tools, including content-driven treetables, for fluid text