Defines the size and location of a viewport where graphics can be displayed
on the screen.
 
VIEW [[SCREEN] (x1!,y1!)-(x2!,y2!) [,[color%] [,border%]]]
 
    - SCREEN                 Specifies that coordinates are relative to the
                             screen rather than the viewport.
    - (x1!,y1!)-(x2!,y2!)    The coordinates of diagonally opposite corners
                             of the viewport.
    - color%                 A color attribute that sets the viewport fill
                             color.
    - border%                A color attribute that sets the viewport border
                             color.
 
    - If all arguments are omitted, the entire screen is the viewport.
    - The available color attributes depend on your graphics adapter and the
      screen mode set by the most recent SCREEN statement.
 
Example:
    'This example requires a color graphics adapter.
    SCREEN 1
    VIEW (10, 10)-(300, 180), , 1
    LOCATE 1, 11: PRINT "A big graphics viewport";
    VIEW SCREEN (80, 80)-(200, 125), , 1
    LOCATE 11, 11: PRINT "A small graphics viewport";
 
See Also    <CLS>    <SCREEN>    <VIEW PRINT>    <WINDOW>
            <COLOR ATTRIBUTES AND VALUES>    <SCREEN MODES>