           const parser = new DOMParser();
              const htmlDoc = parser.parseFromString(html, "text/html");
              const note = htmlDoc.getElementById(id);
              if (note !== null) {
                const html = processXRef(id, note);
                instance.setContent(html);
              } 
            }).finally(() => {
              instance.enable();
              instance.show();
            });
          }
        } else {
          // See if we can fetch a full url (with no h