How to Highlight Text in PDF Documents

How to save the highlights

Sir.. suppose when we are taking this pdf out as a print out in black white text format. This colour of the highlighted text would be what sir after black and white printing?

Thanks 👍👏👌🔥😊

How do you erase them aside from using the undo button

Is there way to highlight without seeing the zoomed in text ?????

Toi rat thich