Reversing a Double Linked-List in C++ using a 'reference pointer'

Here's an example I wrote for how to reverse a double (or 'doubly' as some people like to say) linked-list. The main point of this example is to show that reference pointers are actually useful in the real world. In this particular example it has two advantages: to avoid having to return a Node* and to make the code clearer. The alternative is to use a Node** or Node*** but the code is less readable.

Here is the example - and because i'm an ex ZX Spectrum junkie, it's using the original speccy font! If you don't know what a ZX Spectrum is, go to http://www.worldofspectrum.org