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Question:

The text feature of boldface is most often used to indicate which of these?

A A word that is listed and defined in the glossary
Explaination

Boldface is a text feature most often used to indicate words that are also listed and defined in the glossary, emphasizing them so students notice them more easily and know they can look up their definitions. A footnote is indicated by a superscript number 1 at the end of the word or sentence, not by boldface. Captions below or beside visuals, explaining them, are not in boldface. Neither is the text in sidebars, i.e., boxes at one side of a page with added information, often in more focus or depth.