First there was:
THE NASHVILLE NUMBER SYSTEM by Chas Williams
Book Review by Alice Franceschini
www.GuitarSite.com/newsletters/990809/8.shtml

Then:
THE NASHVILLE NUMBER SYSTEM - Review errors!
comments by Dennis O'Neill
www.GuitarSite.com/newsletters/990816/9.shtml

now, in reply to Dennis, again from: Alice Franceschini:

Half step and whole step is NOT timing, it is the actual sound of the tone or pitch. Any basic piano teaching book will explain this. A quarter note would be timing. Timing also has a whole note and a half note... (there is a) difference between a note and a step.

Well, readers, what do you think? - Ed