xo'u

Abbreviated reference to The Complete Lojban Language -- usual in the Lojban community because it is to date the only Lojban book!

Also known jocularly as the Codex Woldemar, & Lojbanically as la braxu'e ('Big Red Thing'), or le gencukta.

AKA the "Woldy Codex" and "The Woldy"

Also known, unjocularly, as "The Refgram" jbocre: = reference grammar.