gtag('config', 'G-V4BXRZMT6Z');
You can choose documents. [DEFAULT ALLOWED EXTENSIONS: pdf, txt, ps, rtf, epub, odt, odp, ods, odg, odf, sxw, sxc, sxi, sxd, doc, ppt, pps, xls, docx, pptx, ppsx, xlsx, tif, tiff, jpg, jpeg, png, gif.]