How to custom cart checkout page to add new atributes in the details table.

Hi,

Please your help. I need to know which is the JSP page for the /Cart page for the checkout process. I found the controller CartPageController.java. But I need to add new lines in the table to add new attributes.

How could I add new attributes in the table, and make them enable to update like Quantity (OOTB)?

Thank you!!