On gloss:

selbritcita in sense "selbri tag"
x1 is a selbri tag showing information x2
sumtcita in sense "sumti tag"
x1 is a sumti tag/[preposition] showing information x2

On affix form:

tagji
x1 is snug/tight on x2 in dimension/direction x3 at locus x4.

In definition:

cmene
x1 (quoted word(s)) is a/the name/title/tag of x2 to/used-by namer/name-user x3 (person).
tcita
x1 is a label/tag of x2 showing information x3.
fa
sumti place tag: tag 1st sumti place.
fai
sumti place tag: tag a sumti moved out of numbered place structure; used in modal conversions.
fe
sumti place tag: tag 2nd sumti place.
fi
sumti place tag: tag 3rd sumti place.
fi'a
sumti place tag: place structure number/tag question.
fi'o
convert selbri to nonce modal/sumti tag.
fo
sumti place tag: tag 4th sumti place.
fu
sumti place tag: tag 5th sumti place.
gau
gasnu modal, 1st place agent/actor case tag with active agent ...
jai
convert tense/modal (tagged) place to 1st place; 1st place moves to extra FA place (fai).
ri'i
lifri modal, 1st place patient/passive case tag; happens to...,experienced by...,with passive...
va'u
xamgu modal, 1st place beneficiary case tag complement benefiting from ...
cu'u ko'a (comp!)
tagged sumti: can be used for embedded: it-1 said, "...", with editorial unquote and insert.
jaica (comp!)
convert time tense (tagged) place to 1st place; 1st place moves to extra place (fai).
jaivi (comp!)
convert location tense (tagged) place to 1st place; 1st place moves to extra place (fai).
seva'u (comp!)
xamgu modal, 2nd place beneficiary case tag for the benefit of...; with beneficiary ...
cmetcita
t1 is a name tag/nameplate of t2=c2 showing text c1.
lertcitydetri
x1 is the letteral-tagged timestamp of event/state/duration x2, at timezone location x3, by calendar x4
moirtcita
x1 is a tag of x2 showing that x2 is x3-th in set x4 by ordering x5
stoveipa'o
x1=p1=v1=s1 is a snapshot / record / commit / revision / immutable tag / versioned reference / document / sub-hierarchy of data x2=v2, about / pertaining to x3=v3, in repository / data storage / medium (especially of a hierarchy / graph of immutable data / snapshots) x4=p2=v4, immutable and static / unchanging in property x5=s2 (can vary in precision and degree of immutability) in response to stimulus / conditions x6=s3; x1 is a commit.
bei'oi
Tag linkarge 2
be'oi
Tag linkarge
bi'ai (exp!)
Sumtcita indicating that the bridi must be true under the conditions indicated by the tagged sumti.
ca'au (exp!)
Refers to what is usually assumed to be the argument of tense tags when no explicit argument is given
cau'e
elliptical/unspecified scalar modifier: "maybe, maybe not", modifies next selbri-unit or tag
ci'a (exp!)
metadata tag / hashtag
dei'a
tense interval modifier: decreasingly...; decrementative. Tagged sumti, if present, indicates amount of decrease (lo te jdika)
fa'au'u (exp!)
nonce place; tags sumti with an unspecified connection to the bridi
fa'u'i (exp!)
sumti place tag: apply arbitrary sumti application or termset
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).
go'au (exp!)
marks the tagged sumti as being scope-wide within the immediate parent (text-wide by default) specified in the argument of the vocative
jai'a
grammatically converts LAhE to SE; semantically the result tags the x1 of the selbri as being LAhE the supplied x1. Can be converted to other than x1 with SE.
jo'ai (exp!)
convert a selbri tag followed by a tanru unit to a tanru unit; differently from {jai}, it does not change the first place of the tanru unit.
kai'au (exp!)
Adverbial, metacommentary-introducing, and complex discursive or attitudinal: I express this utterance in a manner or with mental state which is described by the immediately following and enclosed bridi in reference to the tagged construct, or assert that the said immediately following and enclosed bridi is true in application to the tagged construct in a metacommentary style.
va'ei (exp!)
converts number to scalar tag; specifies the value on fuzzy logic scale; to the degree (n) on scale ...
xo'i
Extracts selbri from a tag, inverse of fi'o
ze'ai
tense interval modifier: increasingly...; incrementative. Tagged sumti, if present, indicates amount of increase (lo te zenba)
zei'a
tense interval modifier: increasingly...; incrementative. Tagged sumti, if present, indicates amount of increase (lo te zenba)
zi'oi (exp!)
fills and deletes (in the manner as "{zi'o}") all terbri sumti slots of immediately previous (id est: tagged) word that are not explicitly filled with a sumti.
zoi'u (exp!)
tags a topic or prenex; scopes over the entire bridi (unless there is already a {zo'u} clause).
zu'ei (exp!)
Adverbial, metacommentary-introducing, and complex discursive: I express this utterance/construct/(rest of the) bridi which has been tagged for the purpose or goal of enacting, causing, enabling, implementing, actualizing, manifesting, enhancing, yielding, or rendering applicable the immediately following and enclosed bridi or in order to make the immediately following and enclosed bridi be true (or closer to the truth or more true or more strongly true) in application to the utterance/construct/rest of the bridi which has been tagged by this marker; the tagged expression/construct is for the benefit or sake of making the immediately following and enclosed bridi true.
eltada
x1 is a part of Lojban text representing rule 'tag' according to the first edition of the book 'The Complete Lojban Language'.

In notes:

ju'oinai (comp!)
evidential: I don't know that...
ningau
x1=g1=c2 renovates/renews/updates x2=c1, making it new in property x3=c3 by standard x4=c4.
xancidja'i
j1 is a bracelet adorning j2=xa1=c1.
de'ei (exp!)
on (n)-th day from a given point (by default from today)
jai'i
takes NU or LE NU, turns into sumtcita: clarifies the semantic NU-type of the current bridi.
ju'oi (exp!)
evidential: I know that...
ku'au'i (exp!)
categorizer/hashtag
ku'oi
Complex UI construct terminator (elidable).
la'e'au (exp!)
the specific referent of [following sumti] defined/specified by the grammar
lo'o'o (exp!)
plural logic maximum-scope descriptor: those who individually or collectively are ...
xa'ei (exp!)
time tense relation/direction: disconnected in time/place; causally disjoint
zei'au (exp!)
time tense interval: for some length of time.
zi'oi'oi (exp!)
Delete subsequent sumti slots.
geknimi
x1 is a part of Lojban text representing rule 'gek-sentence' according to the first edition of the book 'The Complete Lojban Language'.
zgabube
x1 is a part of Lojban text representing rule 'selbri' according to the first edition of the book 'The Complete Lojban Language'.
ci zei jurfuga
x1 is a part of Lojban text representing rule 'statement-3' according to the first edition of the book 'The Complete Lojban Language'.
re zei taulka
x1 is a part of Lojban text representing rule 'tanru-unit-2' according to the first edition of the book 'The Complete Lojban Language'.