1. 1 on class
2. 1 in definition
3. 1 in notes

On grammatical class:

ra'o

flag GOhA to indicate pro-assignment context updating for all pro-assigns in referenced bridi.

In definition:

cmavnra'o

x₁ is the selma'o "RAhO".

In notes:

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'.