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Separation of presentation and content (or separation of style and content) is a design principle where visual and design aspects are kept separate from the material and structure.[non-primary source needed] A typical analogy used to explain this principle is the distinction between the human skeleton (as the structural component) from human flesh (as the visual component) which makes up the body's appearance. Common applications of this principle are seen in web design (HTML and CSS) and markup language (see LaTeX).
This principle is not a rigid guideline, but serves more as best practice for keeping design and structure separate. In many cases, the design and development aspects of a project are performed by different people, so keeping both aspects separated ensures both readability and simplification as in the DRY principle.
LaTeX is a document markup language that focuses primarily on the content and structure of a document. With this methodology, academic writings or publications can be structured and styled with minimal effort from the creator, and can be quickly reformatted or styled again in different formats for different purposes.
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