Hi. I just made tawbah a few days ago and began my reading of the Quran. I’m both reading Arabic and English tafsir. Is it allowed to highlight the Arabic and the English Ayahs in the Quran in terms of learning and understanding the Quran better?

An example

Verse – highlighted
Notes: This verse is highlighted in red, because it is about hell fire. Furthermore, in this verse, God tells us…………… Which means ………………… .

Verse – highlighted
Note: This verse is in yellow because I don’t understand it.

And so on, Is it forbidden to highlight? If yes, who said that? What is the proof? Was it the scholars or the prophet PBH?