Explanations and further examples are found in Peano.nb. Peano3D added and package revised by Gabriel Chenevert, October 1999. Some small bugs fixed and file Peano.nb added by Gabriel Chenevert, October 1999. Minor revision, Gabriel Chenevert, October 1999. This is certainly not the most efficient way to implement the definitions of these curves.
Any comments are welcome.
Cube is a Graphics3D object representing the cube of side length 4 centered at the origin. Square is a Graphics object representing the square of side length 4 centered at the origin.