Protected Brand and Work-Title Spans
Some names and work titles intentionally use distinctive casing or punctuation that a generic title-case algorithm should not normalize away. A safe converter needs a reviewed preservation layer and must distinguish a known protected form from arbitrary mixed case.
Preserve a reviewed canonical brand or work-title span when the source establishes that form. Unknown mixed-case names and embedded work titles should still leave the result unresolved rather than being forced into ordinary title case.
Key details
Further guidance
Converter Policy
Known protected names and titles can preserve their reviewed casing. Unknown mixed-case spans should not be recased automatically.
Distinctive Titles
Chicago allows limited exceptions when a work’s deliberately distinctive title capitalization is clearly established, including the lowercase novel title “them.”
Known Title Forms
Chicago also documents cases where a work title’s accepted public form does not match the punctuation or capitalization an automatic Chicago transformation might otherwise impose.
Practical Application
Preserve a reviewed canonical brand or work-title span when its distinctive casing or punctuation is established; otherwise leave uncertain mixed-case material unresolved rather than normalizing it automatically.
Reader Check
Check whether the span is genuinely known and reviewed. A converter should not treat arbitrary mixed case as protected simply because it looks distinctive.
Worked Example
If a reviewed title is intentionally styled “them,” preserve that known form; if an unfamiliar mixed-case product name appears, flag it for review instead of forcing ordinary title case.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Headlines and Titles of Works — Chicago Q&A (opens in a new tab)The Chicago Manual of Style / University of Chicago Press · Chicago title-case rules and current-edition updates
- Title case capitalization (opens in a new tab)American Psychological Association · APA title-case rules
- How should I capitalize the title of a handout? (opens in a new tab)MLA Style Center / Modern Language Association · MLA title-style capitalization
- Chicago exceptions for distinctive title capitalization (opens in a new tab)The Chicago Manual of Style · Distinctive publisher-intended title casing such as them
- Chicago permissible title-form exceptions and subtitle normalization (opens in a new tab)The Chicago Manual of Style · Protected title forms and exceptional title/subtitle presentation