Can i modify KNIME IDE source without any license violation?

I need to modify the KNIME IDE for my specific project requirements.I need to modify existing menu and views in the KNIME Analytical paltform.

Can i do it without any KNIME license violation?

IF so , Where can i get the source of the KNIME analytical platform.



Here is a nice description how to access the source code (2. post)

Knime is published under GNU General Public License, Version 3, you can get the full license information here:

Best. Iris