What does outer and inner do?

[Eisverygoodletter]

I have seen some code in the examples like

#[pest_ast(outer(with(span_into_str), with(str::parse), with(Result::unwrap)))]

with multiple items like outer, inner and with. I get that outer and inner are for extracting information from a Span, but what are their parameters meant to be?
Also, are there any more of them I'm unaware of?

[tomtau]

Their parameters define the conversion strategy, so in that example of csv: https://github.com/pest-parser/ast/blob/09255d748b63ecd5741cefb5275763323871f898/derive/README.md?plain=1#L280

it'll first call span_into_str, then parse, and finally unwrap to get that f64 value