# This is a comment =begin This is a multi-line comment. The beginning line must start with "=begin" and the ending line must start with "=end". You can do this, or start each line in a multi-line comment with the # character. =end # In Ruby, (almost) everything is an object. # This includes numbers... 3.class #=> Integer # ...and strings... "Hello".class #=> String # ...and even methods! "Hello".