On grammatical class:

ga'e
upper-case letteral shift.
ge'o
shift letterals to Greek alphabet.
je'o
shift letterals to Hebrew alphabet.
jo'o
shift letterals to Arabic alphabet.
lo'a
shift letterals to Lojban (Roman) alphabet.
na'a
cancel all letteral shifts.
ru'o
shift letterals to Cyrillic alphabet.
se'e
following digits code a character (in ASCII, Unicode, etc.).
to'a
lower-case letteral shift.