There are many opportunities to customize the Shopify cart screen, and there are many times when you want to add a custom Liquid block to the subtotal section. The Dawn theme does not include it by default, so here is an example of how to add it as a block element.
Example of settings to enable the "Customized Liquid" block in the "Subtotal" section of the cart screen in the "Dawn" theme
[Settings] Add the custom.liquid element to the "main-cart-footer.liquid" schema and the display code.
[How to use] Add a "Customized Liquid" section to the subtotal section of the "Cart" screen
