What is the primary function of Claude's citations feature?	To allow the user to verify that the information provided by Claude is sourced from an external document.
How is the citations feature enabled when submitting a request to Claude?	By adding a `citations` field to the prompt configuration with `enabled: true`.
When citing information from a PDF document, what structure is used to pinpoint the source?	A Citation Page Location.
What specific pieces of information does a Citation Page Location provide?	The cited text, the document index/title, and the start and end page numbers.
What structure is returned when citing information from plain text instead of a PDF?	A Citation Char Location.
What is the purpose of the "cited text" within a citation object?	To provide the exact text from the source document that supports Claude's statement.
Is the citations feature restricted only to PDF documents?	No, it can also be used with plain text documents.