<b>Warning</b>: Changing this setting might break ESD downloads. If not sure, use default (PHP)<br><br>Strategy to generate the download links for ESD files. <br><b>Link</b>: Better performance, but possibly insecure <br><b>PHP</b>: More secure, but memory consuming, specially for bigger files <br><b>X-Sendfile</b>: Secure and lightweight, but requires X-Sendfile module and Apache2 web server <br><b>X-Accel</b>: Equivalent to X-Sendfile, but requires Nginx web server instead