902.02(a) Definition Notes in USPC [R-07.2015]
Many of the definitions have accompanying notes. These notes are of two types: (A) notes that supplement definitions by explaining terms or giving examples, and (B) notes referring to related disclosures located in other classes or subclasses.
The latter notes are termed "See or Search" notes and are helpful in explaining the limits of a class or subclass. They generally state the relationship to, and difference from, other identified subject matter collections. Each "See or Search" note helps a user reach a decision either to include or exclude an area containing relevant subject matter.
Search notes are not exhaustive and do not limit the search but suggest additional fields of search. Additionally, since a search note that applies to a particular subclass is rarely repeated for subclasses indented thereunder, it is advisable to review the search notes of all parent subclasses.