Hello. I need to split pdf document into multiple files (pdfs) so that each article that the document consists of is in a separate file, and the pages of the beginning and end of each article should not be cut off if, for example, the article identifier (UDC) is not located at the beginning of the page but somewhere in the middle and the article end identifier (©) is also not at the end of the article, but somewhere in the middle of the page, in other words, the page with the beginning and end of each article is captured entirely. UDC and © are used as the beginning and end of the article, respectively. How can I do it in pdfgrep? P.S Document for splitiing has pictures in it!!!