How to maintain a reference to the orignal document`s page number?

[geoHeil]

Question

I am looking at:
https://ds4sd.github.io/docling/examples/export_figures/ and https://ds4sd.github.io/docling/examples/export_tables/

How to maintain a reference to the original document`s page number? I want to compare the OCR output directly and reference the original document - to make possible deviations directly visible to the end user.