Set the graphical drawing window.
Source position: graphh.inc line 747
procedure SetViewPort(  | 
X1: SmallInt;  | 
Y1: SmallInt;  | 
X2: SmallInt;  | 
Y2: SmallInt;  | 
Clip: Boolean  | 
);  | 
Sets the current graphical viewport (window) to the rectangle defined by the top-left corner (X1,Y1) and the bottom-right corner (X2,Y2). If Clip is true, anything drawn outside the viewport (window) will be clipped (i.e. not drawn). Coordinates specified after this call are relative to the top-left corner of the viewport.
None.
  | 
Return current viewport.  |