log_output_level &lt;string&gt;</code></td><td>Comma-separated minimum per-scope logging level of messages to output, in the form of &lt;scope&gt;:&lt;level&gt;,&lt;scope&gt;:&lt;level&gt;,... where scope can be one of [all, default, name, patch, tpath, translator, util, validation] and level can be one of [debug, info, warn, error, fatal, none] (default `default:info`)</td></tr><tr><td><code>--log_rotate &lt;string&gt;</code></td><td>The path for the optional rotating log file (default ``)</td></tr><tr><td