head f
% f cget -thisown
0
</pre>
</div>

<p>
In this case, C is now holding a reference to the object---you probably don't want Tcl to destroy it.
Similarly, this occurs for members.  For example:
</p>

<div class="code">
<pre>
% Foo f
% Foo g
% f cget -thisown
1
% g cget -thisown
1
% f configure -next g
% g cget -thisown 
0
%
</pre>
</div>

<p>
For the most part, memory management issues remain hidden.  However,
there are occasionally situations where you might have to manually
change the ownership of an 