On grammatical class:
- vi'a
- dimensionality of space interval tense: 2-space interval; throughout an area.
- vi'e
- dimensionality of space interval tense: 4-space interval; throughout a spacetime.
- vi'i
- dimensionality of space interval tense: 1-space interval; along a line.
- vi'u
- dimensionality of space interval tense: 3-space interval; throughout a space.
In definition:
- cmavrvi'a
- x1 is the selma'o "VIhA".
In notes:
- ve'arda
- x1 is a part of Lojban text representing rule 'space-interval' according to the first edition of the book 'The Complete Lojban Language'.