Use when you want to display in the form of paper. Print job comes out on paper, it is called a "hard copy" and be able to define a notion of 2 paper is paper, vertical (Portrait) and horizontal (Landscape)
Used to display the results in the form of paper work Print out a paper called "hard copy" and could determine the orientation of the paper is the second paper vertically (Portrait) and paper horizontally (Landscape).
Used to display in the form of a paper, the Print out of the paper called "the hard copy" and can determine the of the paper 2 line. The paper Portrait) and vertical (horizontal paper (Landscape).