On a whim I have added to my private copy of "freeglut" a function "glutSierpinskiSponge ( int num_levels, GLfloat offset[3], GLfloat scale )" to create a Sierpinski sponge.  If there is an outcry against it I will take it back out; if there is a desire I can duplicate it into solid and wire models like the other geometric shapes.  Any opinions?

John F. Fay