docs(wiki): every fenced block runs or says what it is: foreign code (WAT, Rust, C, Julia, …) labelled with its language; sketches, open questions and not-yet examples fenced as text with a note; two broken fences fixed (ambiguity, broadcasting); 3km+10m == 3010 meters. wiki_blocks: 115 of 330 failing → 0 of 219
async: real threads with runnable examples (overlap, function values, pause/resume, shared arrays); trait: Printable and Iterable
trait: constraints and default operations
trait: Comparable, Equatable, conforming by defining the operation, declared traits (trait keyword and its synonyms)