face=spionic?

What does face=spionic mean? Is that the code to indicate that the SPIonic font will be used? In any case, although I have the SPIonic font installed on my MacBookPro (OS X 10.6.6), enabling me to read the SPIonic font on the Cornell College Athenaze Resources website, I see only letters in the Roman alphabet in the Pharr Discussions by Chapter links, e.g., http://discourse.textkit.com/t/pharr-648-and-649-cases/3056/1 : ἀτρεΐδης. Is there something else I have to do in order to see these “Beta code” letters (or whatever they are) as Greek?

Textkit moved to using Unicode a while ago. I don’t believe that it still supports SPIonic.