app_containing_foo -languages "chinese,japanese,korean"</code>
</ul>

<p>For boolean flags, the possibilities are slightly different:</p>
<ul>
  <li> <code>app_containing_foo --big_menu</code>
  <li> <code>app_containing_foo --nobig_menu</code>
  <li> <code>app_containing_foo --big_menu=true</code>
  <li> <code>app_containing_foo --big_menu=false</code>
</ul>
<p>(as well as the single-dash variant on all of these).</p>

<p>Despite this flexibility, we recommend using only a single form:
<code>--variable=val