BTW, I found that my link to the ruby-math site did not work for me. But

http://blade.nagaokaut.ac.jp/ruby/

does work (for me).

Its the 1st thread in ruby-math. Japanese intimidates me as it
is so unfamiliar to a westerner. I wish I had been taught something
about the east in school, I feel that easterners find out more about
the west  than vice versa.

Sorry, I am rambling.

Van