Hello everyone, I am using *-p gp.tree.print-style=latex*  that I learned
from ecj tutorial#4 to print some results into my paper.

After including the packages, a sample result looks like in screenshot, and

The code for screenshot is:






Obviously there is a huge white space I don't want, so i deleted
\begin{center} and \end{center} to see what happens. Then I get
screenshot2, which is not an improvement at all.

What is the correct way to print this out? Thanks!