pub fn described(obj: &Object, s: &Settings) -> Result<Value, Error>Expand description
obj as JSON (its serde shape) with the calculator’s own text in a
text field on the object and on every object inside it (a list’s
items, a tagged object’s object, an array’s elements), each as it is
written in that place; no text where there is none (has_text).
A front end shows and copies these texts and formats nothing itself.
An error past MAX_DESCRIBED_TEXT characters of text.