On grammatical class:

se'u
elidable terminator: end discursive bridi or mathematical precedence;usually elidable.

In definition:

cmavrse'u
x1 is the selma'o "SEhU".

In notes:

slurume
x1 is a part of Lojban text representing rule 'free' according to the first edition of the book 'The Complete Lojban Language'.