After some hours of developing ...
Packages on top are extracted Packages which can be build with the tool.
Packages on the bottom are not yet extracted (tool allows extracting SIGNED AND UNSIGNED** files).
On the right you can see all the available options for now.
On the very right you see a windows which shows all the informations about a pkg file.
**If you get the message that you can't extract a debug package you only need to sign it and extract it again.
Developer of PS Multi Tools, PS3 Lite Tools, PS PKG File Manager and XMBPC.