Scott has just informaed me that his FSF assignment papers have been
processed and cleared. Based on his work at
http://www.antisleep.com/elisp/gse-number-rect.el I propose following
new feature to be added to the rect.el package.

2009-03-22  Jari Aalto  <jari.aalto@cante.net>

        * rect.el (rectangle-number-lines): New user function.
        (rectangle-number-line-callback): New function.
        (rectangle-number-line-format-history): New variable.
        (rectangle-number-line-counter): New variable.
        (define-key ctl-x-r-map "N" 'number-rectangle): New
        user key binding. The basis of the rectangle numbering code was
        lifted from gse-number-rect.el, orignally developed by Scott Evans
        <gse@antisleep.com>. Used by permission (GPL).