How to edit Product information?

Edit Products, Prices, Bundles- In each of the sections, there is a possibility to edit form, description, and other information. Find edit next to the product, offer, price, and bundle section: 

By selecting in Edit in either of the sections, there are fields that can be edited and fields that cannot. It will be shown as below:

•  Fields that are marked in Grey color, cannot be edited;
•  Fields that are marked in Black color can be edited;
•  Once the edit is finished, select Save;