From the PTO:

Join us for a seminar on filing DOCX, which is structured text. The DOCX Information Sessions will start Wednesday, November 13 from 2-3 p.m. ET. We will discuss DOCX as an efficient way to file a patent application electronically. You’ll learn what the DOCX format is, how you can use it to file nonprovisional utility applications, and the benefits it provides to you and your patent applications.

The webinar is free and open to all. Please register for available dates and times.

More information is available on the event page of the USPTO website