questions about DOI & cmene

["And Rosta" <a.rosta@dtn.ntl.com>]

1. Why is "doi" in DOI, while "mi'e" is in COI?

2. "la nanmu" means "ko'a poi cmene fa zo nanmu ke'a", while
"coi nanmu" means "coi do [p]oi nanmu fa ke'a". I cannot work
out from the Woldy Codex whether "doi nanmu" is in this
respect like LA or like COI: does it mean "O man" -- "doi
do [p]oi nanmu fa ke'a" -- or "O Man" -- "doi la nanmu"?

3. "do poi nanmu fa ke'a" should mean "those of you that
are men", but does "coi nanmu" mean "Hello, those of you
that are men", "coi do poi nanmu fa ke'a", or does it 
mean "Hello, men", "coi do noi nanmu fa ke'a"?

4. Why are lojbanists encouraged to name themselves and others
with cmevla? 

--And.