Topic: Functional Cross-Reference in PDF
I created an app image.
The program searches the cross-references in the PDF and then links to the page it finds. For example, at 22.7 the program links to p. 22. The drawback here is that you can't have any jumps in the circuit diagram. You can select the cross-reference type at the top. For page.column use X.X and for page.row.column use X.X.X. However, I have only tested X.X, as my cross-references look like this. I hope the program can be useful for some people, as the question about cross-references in the PDF has often been asked in the forum.
I have attached the app image + the source code in a .zip.