Economy Size Geek

I’m guessing this in some way relates to why it is called ruby :) (Plus a ruby is more valuable than a perl)

Ruby Annotation
1.1 What is ruby?

Ruby is the term used for a run of text that is associated with another run of text, referred to as the base text. Ruby text is used to provide a short annotation of the associated base text. It is most often used to provide a reading (pronunciation guide). Ruby annotations are used frequently in Japan in many kinds of publications, including books and magazines. Ruby is also used in China, especially in schoolbooks.