diptych

Hi all, I'm not sure where else to put this, but I figured I'd try it here first, since you EO are probably a lot more familiar with 'Greek stuff' than I am. I've recently acquired a rather antiquated (1913) collection of English translations of Syriac-language writings concerning the Syriac...

[By this, of course, I mean the diptychs in a liturgical setting, not the common art term for icons and paintings set in a diptych (two-fold) arrangement.] The diptych was once a literal object kept in the local church, made of wax tablets onto which the names of the living and departed...