On grammatical class:

ku
elidable terminator: end description, modal, or negator sumti; often elidable.

In definition:

fi'oi
Right-scoping adverbial clause: encloses a bridi and turns it into an adverbial term; the antecedent (ke'a) of the enclosed bridi stands for the outer bridi {lo su'u no'a ku} (the bridi in which this fi'oi term appears), including all the other adverbial terms (tags...) within this bridi located on the right of this fi'oi term (rightward scope).
noi'a
incidental/non-restrictive adverbial: converts selbri to bridi adverbial term. The first place of the converted selbri is claimed to be such that the outer bridi satisfies it, and the outer bridi is claimed. {broda noi'a brode} means {lo nu broda ku goi ko'a cu fasnu .i ko'a brode}.
xoi
Right-scoping adverbial clause: encloses a bridi and turns it into an adverbial term; the antecedent (ke'a) of the enclosed bridi stands for the outer bridi {lo su'u no'a ku} (the bridi in which this xoi term appears), including all the other adverbial terms (tags...) within this bridi located on the right of this xoi term (rightward scope).
bundukiia
x1 xarci fi lo ka jai gau cecla ko'a i je ta'e ku ko'a marji lo jinme jo'u lo drata
cmavrku
x1 is the selma'o "KU".

In notes:

lo
descriptor: the one, which (is / does) ... / those, which (are / do) ...
caku
Now. At the present time.
ji'asai
even
jbovla
x1 is a defined Lojban word, considered as a word as per Lojban's grammar, with meaning/role x2
sumsmi
x1 is a term (syntactic unit).
bo'ei
single Lojban-word name quote, turns to selbri-unit: "x1 is that which has this name"
ca'au
Refers to what is usually assumed to be the argument of tense tags when no explicit argument is given
cu'au
universial famyma'o: terminates the most recently opened construct or clause.
fo'ai
Creates a predicate abstraction sumti out of a full bridi clause, binding all the necessary lambda variables to the fo'a-fo'u pronoun series.
jai'i
takes NU or LE NU, turns into sumtcita: clarifies the semantic NU-type of the current bridi.
kei'au
mekso operator: finite result set derived from/on set A with/due to operator/function B under ordering of application C
ke'u'i
accepts number (n) after: repeat last sumti up to n times
ko'ai
Creates a predicate abstraction sumti out of a full bridi clause, binding all the necessary lambda variables to the ko'a-ko'u pronoun series.
lo'o'o
plural logic maximum-scope descriptor: those who individually or collectively are ...
ro'oi
universal plural quantifier. “All.”
su'oi
existential plural quantifier. “There is/are.”
zai'e
jargon word indicator; indicates next word is a jargon word
zau'e'u
text affirmation/negation mode toggle
mu zei sumtika
x1 is a part of Lojban text representing rule 'sumti-5' according to the first edition of the book 'The Complete Lojban Language'.
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'.