ß - This Link / Recurse
The resulting link is variadic, meaning that it may change based on context or other quicks applied to it. Note that the arity refers to that of the resulting link, not the number of links this quick consumes.
Call this link with the same arity.
Technically, the resulting link is variadic, which means that if certain quicks are applied to
ß, its arity may not actually be the same as the link's, but rather coerced into another arity.