Because we don't actually care about PHP's native EOL marker. We care about `JS_EOL` :smile: If on a Windows machine, `PHP_EOL` is `\r\n` then this will get sent to the browser in the code above. Whereas on a Unix machine, if `PHP_EOL` is `\n` then that will get sent to the browser. The browser doesn't care what EOL marker is native to the server. I'm just curious what differences (if any) between browsers when rendering `\r\n` vs `\n` in tooltips.