faceA(x, y, width, height)
faceB(x, y, width, height)
faceC(x, y, width, height)
faceD(x, y, width, height)
faceE(x, y, width, height)faceA and faceB are
graphics functions to be used for their side effect of
producing graphical output.
The functions faceC, faceD, and faceE
return a grob representing a face (and produce no output).