[Koha-devel] What's a "Dewey"?

It's used in cmsd.tmpl. I've found it on dictionary.com but I didn't be able to determine what's the right definition, the closest match in context could be: Dewey, Melvil. 1851-1931. American librarian and founder of the decimal system of classification (1876). But I really don't know what are doing Melvil Dewey at my computer O_O