ePub and Tagged File Formats
HTML is at the heart of a great many electronic document formats, especially on the web. Those letters stand for HyperText Markup Language. Essentially, we “mark up” content to tell each chunk what it is—header, subheader, list, regular paragraph, etc. Software, like web browsers, display each chunk based on what it is. A top-level header, marked up with the H1 tag, defaults to bold and quite large, whereas an item in a list would be displayed with a bullet and would be indented. Screen reader software for the visually impaired benefits from the hierarchies and the meaning given by markup tags.
Each style we make (paragraph, character, or object) can have a tag associated with it via Export Tagging ...