text: // https://datagrok.ai/help/visualize/viewers/markup
  
  fetch('/demo/markup_viewer/eeg_21_10-20.svg').then((r) => r.text().then((html) =>
    grok.data.getDemoTable("sensors/eeg.csv").then(function (t) {
      let view = grok.shell.addTableView(t);
      view.markup({content: html});
    })));
  