Landscape mode
In 
telecommunication, the term 
landscape mode has the following meanings: 
-  In facsimile, the mode for scanning lines across the longer dimension of a rectangular object, i.e., rectangular original. 
-  In computer graphics, the orientation of an image in which the longer dimension is horizontal. 
-  An orientation of printed text on a page such that the lines of text are parallel to the long dimension of the page. 
Note: If the page contains an image, such as a picture, and the page is viewed in the normal manner, the long dimension of the page would be parallel to the 
line that joins the eyes of the viewer.
Source: from Federal Standard 1037C