Document prepared by LaTeX, a high-quality typesetting system; often used for technical and scientific documents, but can be used for many other forms of publishing.

LaTeX allows authors to define basic information (such as the title, author name, date, article text, etc.) and not worry about formatting. Instead the LaTeX system defines the formatting based on pre-defined styles. This allows LaTex to standardize the format of many documents at once. NOTE: Latex documents more commonly use the .TEX or .LTX extensions.