Can you tell me what different about "libraries" and the "core"?

[eluser]bluelomo[/eluser]
and the what mean about "third_party"?

[eluser]maulik13[/eluser]
If you haven't read already, you should read this link and the user guide online or offline user guide that come with download.
http://ellislab.com/codeigniter/user-gui...gelog.html

Edit:
I thought it was driver related. But third_party is the application package folder. You should read about them more in the guide.