When creating documents in Word, it is recommended to use heading styles (also called 'Headers'), which provide a meaningful structure. For example, 'Headline 2' should be larger than 'Headline 3', '4', '5', etc., but smaller than 'Headline 1'.
H1, H2, H3, H4, H5, H6...
The different levels reflect the importance of the heading. There are no fixed rules for when a heading should be, for example, H4 or H5, only that it is logical in relation to the document in question.
All standard formats in Word can be set to the typography you desire. It is crucial, if a Word document is to be made accessible, that clear formatting such as headings, subheadings, and bullet points are used.
All images, drawings, illustrations, icons, diagrams, logos or similar elements need to be considered. Are they decorative, or do they need to be explained for people who cannot see them? If they are decorative, you should mark them as such, and if they need to be explained, you should add alternative (also called ALT) text. This is important because, for example, the image or illustration should also be conveyed to those who cannot see images or graphics.
To make images and illustrations accessible, alternative text can be added.
In this way, the reader gets a description of what the image or illustration represents read aloud.