[r-t] Decisions / Algorithms for generating the extent

[Alexander Holroyd]

In fact, there seems to be a lot of interesting stuff in this chapter of 
Knuth's book.  On p21 he talks about the extent on 5 generated by 23451 
and 21345, and the corresponding one on 6.

On Mon, 26 Jun 2006, Richard Smith wrote:

> The idea of apply Plain Changes to the coursing order is
> given in Knuth's "The Art of Computer Programming"
>
>  <http://www.ex-parrot.com/~richard/papers/fasc2b.ps>.