modify preceding cmavo to not cross bridi; require its terminator by the next «i».
Convenience utility to limit the cmavo before i'oi to automatically terminate on the next .i. Useful for fu'e and lu limited to the current bridi. Note: if already terminated explicitly, i'oi adds no effect. Example: «.i mi cusku lu .i'oisa'a mi nelci lonu na pilno lo valsi poi marbartu ku'o pu lonu bazycuxlanli ri». See also: i'oi'a (effectively merge to outer block), i'oi'a'o (generalization of i'oi).