elliptical presence or absence of "jai".
If used without a sumtcita, the meaning is that the information about presence or absence of a "jai" has been left to context. "lo se pensi be mi cu jai'e jitfa" = "lo se pensi be mi cu jitfa gi'a jai jitfa". In cases where it is questionable whether or not a "jai" is needed for sumti raising, but the meaning is clear, this word can be used to bypass Lojban's very strict sumti raising semantics. Regardless of which of the two alternative meanings is then applied, the fai-place always contains the original x1. When used with a sumtcita, the meaning is identical to "jai". See also jai, tu'a, fai.