On grammatical class:

ku'e
elidable terminator: end mathematical (mex) forethought (Polish) expression; often elidable.

In definition:

cmavrku'e
x1 is the selma'o "KUhE".

In notes:

re zei meksota
x1 is a part of Lojban text representing rule 'mex-2' according to the first edition of the book 'The Complete Lojban Language'.