LIT The string SaPpH{{i}}on contains the token {{i}} once. Deleting that token and lowercasing yields sapphon, seven letters.
AMBER sapphon is the name of an earlier sphere, six processors around one center. The link is the spelling, not a proof that the two counts are the same object.
WALL The spelling does not by itself attribute that earlier sphere, and it does not say what {{i}} denotes beyond this token.