Draws a face, consisting of a rectangle for the border, circles for eyes, and a line for the mouth.
faceA(x, y, width, height)
faceB(x, y, width, height)
faceC(x, y, width, height)
faceD(x, y, width, height)Numeric values or unit objects specifying the location and size of the face.
The functions faceA and faceB are
graphics functions to be used for their side effect of
producing graphical output.
The functions faceC and faceD
return a grob representing a face (and produce no output).