guments: 1: A single element to add to a set<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2: A set<br>
Returns:&nbsp;&nbsp;&nbsp;Returns the set with the element added<br>
</span>

<hr><b>set_remove</b><br>
<br>
<span style="font-family: monospace;">Arguments: 1: A single element to remove from a set<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2: A set<br>
Returns:&nbsp;&nbsp;&nbsp;Returns the set with the element removed<br>
</span>

<hr><b>set_is_member</