lts to <I>top</I>,
<I>right</I> defaults to <I>left</I>, and
<I>top</I> defaults to <I>left</I>.
In other words, a list of three numbers specify the left, vertical, and right padding;
a list of two numbers specify the horizontal and the vertical padding;
a single number specifies the same padding all the way around the widget.
This option may not be mixed with any other options.
<P><DT><A NAME="M7"><B>-margins </B><I>padding</I></A><DD>
Specifies the elements exterior padding.
<I>padding</I> is a list of up