I need in Woocommerce shopping cart to modify the structure of the display of the total content (that is, the typical of the cart, where you verify that you have everything you have added or delete if you added something else without wanting to). The final page that I have to modify it. I think (I'm not sure) that what I searched for is in the woocommerce / includes / class-wc-cart.php file but I have a problem when I try to access the template and I get a blank screen. Because of the structure of Woocommerce and Wordpress, I know that at least part of the php code must be used.
Then, I would like to know if it is that file or not or exactly, to start modifying the template (or see the programming to start it) and if it is that file, as well as access it from wordpress without a white screen (in the worst case I download it and edit it on my pc in a notepad ++ or similar, but I would like to fix that I do not know because it is given).
PS: I asked in the wordpress.stackexchange and they told me to ask in another stack because that was not their competence (or something like that, my English is not a big deal).