maybe even better would be to embed another pdf reader and edit blank page pdf or even generaly any pdf.
I am not sure if bitmap can be written to scribling app and simply pdf would be much better IMO than scribling. Pdf format is much more portable and it would be possible to work with notes on PC or again in M92 reading it as the main document.
By print screen I didn't mean the whole screen, but user selectable part of screen. I guess PocketBook 9xx has this feature.