What is the files of *.GOseq.depleted outputed by analyze_diff_expr.pl ?

Hi all.

I performed GO enrichment analysis, running analyze_diff_expr.pl which is a script in Trinity.
It outputed some files, but I can’t understand the means of “*.GOseq.depleted”.
In this case, what does it means?

I’m beginner of RNAseq analysis, so I apologize if this is an inappropriate question.
I really apprexiate your help in advance!