>I would even say that "crossing out lines you disagree with" is vandalism if you cross out words in a book you borrowed, that is vandalism. if you cross out w

>I would even say that "crossing out lines you disagree with" is vandalism if you cross out words in a book you borrowed, that is vandalism. if you cross out words in a book you own, by definition, that is not vandalism. it would be uncool to mark up a textbook you planned to resell at the end of the semester, but it still would not be vandalism assuming you bought the textbook.