This is the "Hello World" of PDFs. Most pdfs these days have all of the objs compressed with deflate. and then, because that didn't make it difficult enough t

This is the "Hello World" of PDFs. Most pdfs these days have all of the objs compressed with deflate. and then, because that didn't make it difficult enough to follow, a lot of pdfs have most of the objects grouped up inside object stream type objects which then get compressed. So you can't have text editor search for a "6 0 Obj" when you are tracking down the end of a "6 0 R"