On grammatical class:

goi
sumti assignment; used to define/assign ko'a/fo'a series pro-sumti; Latin 'sive'.
ne
non-restrictive relative phrase marker: which incidentally is associated with ...
no'u
non-restrictive appositive phrase marker: which incidentally is the same thing as ...
pe
restrictive relative phrase marker: which is associated with ...; loosest associative/possessive.
po
restrictive relative phrase marker: which is specific to ...; normal possessive physical/legal.
po'e
restrictive relative phrase marker: which belongs to ... ; inalienable possession.
po'u
restrictive appositive phrase marker: which is the same thing as.
voi'e
titular possessive: possessive that is part of a name, e.g. "The Summer of Love", "The Wars of the Roses", "Zeno of Elea"
pecai
restrictive relative phrase marker: permanently / inalienably associated with; it is impossible or near-impossible to break that relation
pesai
restrictive relative phrase marker: semi-permanently associated to; will remain associated unless something breaks that relation

In definition:

fo'a
pro-sumti: he/she/it/they #6 (specified by goi).
fo'e
pro-sumti: he/she/it/they #7 (specified by goi).
fo'i
pro-sumti: he/she/it/they #8 (specified by goi).
fo'o
pro-sumti: he/she/it/they #9 (specified by goi).
fo'u
pro-sumti: he/she/it/they #10 (specified by goi).
ge'u
elidable terminator: end GOI relative phrases; usually elidable in non-complex phrases.
ko'a
pro-sumti: he/she/it/they #1 (specified by goi).
ko'e
pro-sumti: he/she/it/they #2 (specified by goi).
ko'i
pro-sumti: he/she/it/they #3 (specified by goi).
ko'o
pro-sumti: he/she/it/they #4 (specified by goi).
ko'u
pro-sumti: he/she/it/they #5 (specified by goi).
foi'e
GOI attachment modifier: allows a cmavo of selma'o GOI (which must follow immediately) to be attached to a selbri
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}.
cmavrgoi
x1 is the selma'o "GOI".

In notes:

ce'ai
lambda variable prenex; marks the end of introduction of lambda-scope variables.
cei'e
define following selbri with sentence or tu'e...tu'u clause
goi'e
assign sentence or tu'e...tu'u group to sumti
ka'ei
abstractor: predicate abstractor. x1 is the predicate expressed by [bridi], using bo'a, bo'e, etc for variables.
ke'au
relative clause prenex: assigns a variable to the object of the relative clause
binsasu
x1 is a part of Lojban text representing rule 'relative-clause' according to the first edition of the book 'The Complete Lojban Language'.
goilka'i
x1 (text / virtual-text-object) is a variable representing x2