#mark-3">mark/3</a></td><td>Sets the read cursor in a private group.</td></tr>
<tr><td valign="top"><a href="#open-2">open/2</a></td><td>Opens a private group.</td></tr>
<tr><td valign="top"><a href="#rename-3">rename/3</a></td><td>Rename a group.</td></tr>
<tr><td valign="top"><a href="#set_purpose-3">set_purpose/3</a></td><td>Sets the purpose for a private group.</td></tr>
<tr><td valign="top"><a href="#set_topic-3">set_topic/3</a></td><td>Sets the topic for a private group.</td></tr>
<tr><td valign="top"