Spacing

The bundle environment has three parameters for spacing.

• \GapDepth means minimum height of gaps between adjacent nodes.

• \GapWidth means minimum width of gaps between adjacent nodes.

• \EdgeLabelSep means height of an edge label from the lower node of the edge.

You should set these parameters before the bundle environment if you dislike default values.

If you write

\begin{bundle}{xxx}
\chunk{aaa}
\chunk{
	\setlength{\GapDepth}{5pt}
        \setlength{\GapWidth}{5pt}
        \begin{bundle}{yyy}
        \chunk{bbb}
        \chunk{ddd}
        \end{bundle}}
\chunk{ccc}
\end{bundle}