O.N.E Author is the OECD's MS Word-based authoring solution. It has been designed to operate on Microsoft Word versions from 2016 upwards in both Windows and Apple environments.
For external Windows users, there is also the option to download and install O.N.E Author technical files in order to facilitate the drafting experience (see pages under Important Information on the right). This enables you to benefit from the style shortcuts and Quick Parts for the insertion of pre-formatted tables, figures and boxes, for example. Your OECD contact can advise whether or not you need to install these files.
Note: We plan to make a similar package available to external Apple users.
If you do not find the answer to your question via this site, please get in touch with your OECD contact.