sa SA cmavo

erase complete or partial utterance; next word shows how much erasing to do.

Proposed rafsi -saf-; in a lujvo this erases the current/previous group (bo, ke-ke'e, nu-kei, etc). Ex gim[kamsmikezysaf]pro = gim[kamsmisaf]pro = gimpro

In definition:

si'oi
erases a SI, SA or SU cmavo; is to "redo" as SI/SA/SU is to "undo".
cmavrsa
x1 is the selma'o "SA".

In notes:

vicma'o
x1 is an eraser word
go'ei
repeat (copy-and-paste) the recontextualized content of the most-recent or indicated NOI relative clause.
nebmaugi
x1 is a part of Lojban text representing rule 'null'