automatically.
</p>

<p>
If you set <code>auto</code> to false, you indicate that you want to handle restarts manually at the REPL, with <code>(system.repl/reset)</code>. Please note that SYS will be initialized and started for you at first run. 
</p>

<p>
If you don’t supply a SYS argument, the system task will act as a <code>tools.namespace</code> wrapper. Each time you save your file, affected namespaces are reloaded in dependency order (after being unloaded in reverse order). This is handy for project