SE library's licence

Hi,

(I don't reply directly to the thread mentioning it: I wasn't subscribed 
anymore)

I read the thread in the archives but haven't understood why the LGPL 
wasn't even mentioned...

LGPL code can be linked in both open source and proprietary product ; it 
only forces disclosures of the changes to the lib itself, not of the 
full code of the program. It is the licence generally used when GPL 
would be too strong.

You can find the text here:
http://www.gnu.org/licenses/lgpl.html

Hope it helps,

J.P.