What feature in EPUBs helps with text processing based on user settings?

Reflowable publication is a key feature in EPUBs that enhances accessibility by allowing the text to adjust dynamically based on user preferences and settings. This means that users can change the font size, style, and spacing without altering the overall reading experience. Reflowable text adapts to fit the screen of any device, whether it's a phone, tablet, or e-reader, ensuring that the content remains readable and visually appealing regardless of the screen size or orientation.

This adaptability not only provides a better reading experience for individuals with visual impairments who may require larger text but also caters to a wide range of user needs and preferences. By adjusting the presentation of content without being confined to a fixed structure, reflowable EPUBs enhance accessibility. Other options, like static pagination and fixed layout, do not offer this level of flexibility and can hinder the accessibility of the document, as they lock the text into a specific format that does not adapt to individual user settings. Dynamic multimedia adds interactivity but does not specifically address text processing adjustments based on user preferences.