Citations in file search to specific page of the file

API
,
1

citations in file search to specific page of the file
how can we understand the index returned to map it to our file pages
since we don’t know how exactly they are treating the pdf file ocr … we dont know the exact index

{
  "type": "file_citation",
  "index": 992,
  "file_id": "file‑…",
  "filename": "deep_research_blog.pdf"
}```