Status: IN
Visitor and Iterator together articulate traversal as a complete, maximally flexible design concern: Iterator provides the three-consequence operational framework (traversal variation, simplified aggregate interface, concurrent traversals), while Visitor extends this with three traversal-control options and maximal structural unconstrained-ness (no common parent required, any object structure topology) — ensuring that the recursive subsystem's traversal capability is both operationally comprehensive and structurally unbounded.
Iterator's operational framework and Visitor's structural unconstrained-ness jointly articulate traversal as a complete design concern
Depends on (SL): visitor-traversal-flexibility-completes-iterator-concerns, visitor-maximally-unconstrained-operation-extension