features

Recently got an iPad but have a few questions.

​

(1) Is there a way to take a picture of an image (a page in a book, or hand written notes on lined paper and pencil) and make it appear as a scan? Or will the picture just look like a picture?

(2) For search feature, is there a way to search texts in an uploaded image? hand written notes in an uploaded image? hand written notes I wrote using the apple pencil in the app?

(3) I study by reviewing everything and high-lightening what I don't know. Is there a way to undo all the high lightening in a fast way without selecting each and every high-light?