sS hInteractiveJS() {
  ret hscript("https://cdn.jsdelivr.net/gh/interactiveJS/interactiveJS@v2.0.1/src/interactive.min.js")
    + hcss("https://cdn.jsdelivr.net/gh/interactiveJS/interactiveJS@v2.0.1/src/css/interactive.min.css");
}