On grammatical class:

za
time tense distance: medium distance in time.
zi
time tense distance: instantaneous-to-short distance in time.
zu
time tense distance: long distance in time.
za'ai
time tense distance: an unspecified distance in time

In definition:

cmavrzi
x1 is the selma'o "ZI".

In notes:

sepcau
s1 is immediately next to x2.
teijbi
j1=t2 (point in time / point-event) is near/approximates j2=t3 (point in time / point-event).
temsepcau
c1=s1 is immediately next to s2 in time.
purzida
x1 is a part of Lojban text representing rule 'time-offset' according to the first edition of the book 'The Complete Lojban Language'.
zilze'apuda
x1 is a part of Lojban text representing rule 'time' according to the first edition of the book 'The Complete Lojban Language'.