Printing/Exporting selected parts only

I’d like to print notes on index cards to review them at my will. I do not print all the content I add to my Obsidian notes, though, but rather only key sentences or paragraphs.

I do not print them as traditional flash cards, though - i.e. not with front and verse - but rather straight.

Is there any way to mark such sentences and paragraphs in my files so when I export them to a PDF to be printed, only the selected parts are exported?

Since I haven’t found anything, I wrote this script. Hopefully it will be useful to someone else out there as well: GitHub - 42piratas/obsidianfcards: Extract sentenced and paragraphs from your Obsidian notes to transform them into Flashcards