Final answer:
In typesetting, using roman, italic, and small caps correctly involves applying each style according to its conventional function: roman for body text, italics for emphasis, and small caps for stylistic choices or acronyms.
Step-by-step explanation:
To respect the integrity of roman, italic, and small caps in typesetting, one must consider how these typographical styles are conventionally used. Roman type is the standard typography used for most of the body text, providing a neutral and clear reading experience.
Italics are typically used for emphasis, for titles of works, or for foreign words within an English text. For proper use of italics, both words in a phrase should be in lowercase, unless the first word is at the beginning of a sentence, requiring capitalization.
Small caps usually refer to uppercase characters set at the same height as lowercase letters and are commonly used for acronyms, names, or as a stylistic choice in headings or for emphasis without the assertiveness of full-size capitals.