9.2.3 Derived Variables ↑
9.2.3.7 Major Work
When a Work Type field is available for a Collection, then a special variable name of major-work can be used in a Merge Template in order to determine whether the work is a major one, that would normally be italicized (as with the title of a book or a film), or a minor one, whose title would normally appear within quotation marks.
The resulting value will either be ‘true’, for a major work, or ‘false’, for a minor work.
If the field is missing, or blank, or set to ‘unknown’, then a major work will be assumed.