Comments on gtk-ruby/main.rb appreciated

I’ve been using ruby-gtk for a few weeks now. Please find attached
comments I’ve made about one of the sripts. In order to get me up to
speed I’ve looked at the main script for the gtk-demo and boated it
with comments. I find it
under
/usr/local/src/ruby-gtk2-0.14.1/gtk/sample/gtk-demo/

and

/usr/local/src/ruby-gtk2-0.14.1/gtk/sample/gtk-demo/main.rb
contains the file to get the whole demo going. Comments appreciated on
my comments so that I can rally get a better understanding of Ruby and
gtk. (Note that I’ve called it jx-main.rb in order to protect the
original file)

Hope this may help fellow novices.