     } else {
        return note.innerHTML;
      }
    }
  }
  for (var i=0; i<xrefs.length; i++) {
    const xref = xrefs[i];
    tippyHover(xref, undefined, function(instance) {
      instance.disable();
      let url = xref.getAttribute('href');
      let hash = undefined; 
      if (url.startsWith('#')) {
        hash = url;
      } else {
        try { hash = new URL(url).hash; } catch {}
      }
      if (hash) {
        const id = hash.replace(/^#\/?/, "");
        const note = window.document.getE