On grammatical class:

le'u
end quote of questionable or out-of-context text; not elidable.

In definition:

cmavrle'u
x1 is the selma'o "LEhU".

In notes:

xa zei sumtika
x1 is a part of Lojban text representing rule 'sumti-6' according to the first edition of the book 'The Complete Lojban Language'.