The redacted parts in the documents have codes, e.g.: (b)(1) (b)(3) NatSecAct What are those codes refering to? Are only names redacted? For you who have tr

The redacted parts in the documents have codes, e.g.: (b)(1) (b)(3) NatSecAct What are those codes refering to? Are only names redacted? For you who have trouble searching, here's a document I just stumbled on while browsing through the content: https://www.cia.gov/library/readingroom/docs/0006541525.pdf https://www.cia.gov/library/readingroom/docs/0006541525.pdf It is about interrogation techniques used by USA (power drills were mentioned). Scary stuff. I wonder, if you train a machine with content from major (all?) news sites, could it then, in theory, predict what was redacted to some degree? I have an itch to scrape this content. Maybe I shouldn't.