pure interface of class PSGrapher

public class PSGrapher
  extends Grapher
{
    public PSGrapher(int llX,
                     int llY,
                     int urX,
                     int urY,
                     String font,
                     int size,
                     Printer p);
    public void black();
    public void blue();
    public void purple();
    public void red();
    public void drawLine(int llX,
                         int llY,
                         int urX,
                         int urY);
    public void drawArrow(int llX,
                          int llY,
                          int urX,
                          int urY);
    public void drawRectangle(int llX,
                              int llY,
                              int urX,
                              int urY);
    public void drawText(int x,
                         int y,
                         String text);
    public void drawCircle(int x,
                           int y);
    public void drawDot(int x,
                        int y);
    public void drawUTurn(int bot,
                          int left,
                          int top,
                          int right);
    public void close();
}