--0-207035039-11340289201788 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit CamelCase has been sporadically used since ancient times: http://en.wikipedia.org/wiki/CamelCase#History "CamelCase" is not explicitly mentioned in the style guide but the examples show upper CamelCase for Class and Modules and lower case with underscores at word boundaries for variables and methods: http://pub.cozmixng.org/~the-rwiki/rw-cgi.rb?cmd