Definition: The term 'styles_edit_body.tpl' refers to a specific template file that is used for editing body content, specifically within WordPress themes. This file contains code snippets intended to alter or customize the appearance of individual pieces of text in a blog post (like headings, paragraphs, images, and so on). The purpose is to enable users to tailor their posts according to their design preferences by modifying specific elements like headers, subheadings, footers, etc., without altering the core structure.