9.2 Categories of documents (X, Y, P, A, D, etc.)
9.2.7 Documents cited in the application
When the search report cites documents already mentioned in the searched application's description, these are labelled with the letter "D" (see B‑IV, 1.3).
When the search report cites documents already mentioned in the searched application's description, these are labelled with the letter "D" (see B‑IV, 1.3).