What does EPUB support in terms of text representation?

EPUB, which stands for Electronic Publication, is a widely used digital eBook format designed to support reflowable content, which adjusts to various screen sizes. One of the critical features of EPUB is its support for Unicode text.

Unicode is a standard encoding system that allows for the representation of almost all written languages used globally, as well as many symbols. This capability provides significant advantages for creating accessible and multilingual digital content. By using Unicode, EPUB documents can include a variety of characters from different languages, including complex scripts, which is essential for ensuring that text is displayed correctly and is accessible to a broader audience, including those using assistive technologies.

In contrast to this, other text types mentioned in the choices lack the expansive capabilities that Unicode offers. ASCII text, for example, is limited to representing English characters and lacks support for other languages and symbols. Binary text, while it can represent data, does not pertain to the way textual content is viewed or formatted in an EPUB. Image-based text can present challenges for accessibility, as it may not be readable by screen readers unless it is properly tagged or includes alternative text descriptions. Thus, the use of Unicode text in EPUB is fundamental to ensuring that eBooks are both accessible and versatile.