I've modified the contents of the "email_order_details.inc.twig" file and have since included the modified version directly into the template as the 1.1 documentation suggests. Essentially I altered the HTML entities, left the logic as is, but wrapped the entire file in nested blocks. I'm calling the block inside the placeholders, having replaced the "include" function. Upon inspection of the email source code after a test transaction, the code is being displayed both in where it was pasted in the template and where the block is being called. How do I prevent it from being displayed in the pasted area so that only the block reference causes it to render?