LaTeX Document (.ltx)
An LTX file is a LaTeX Document. It contains LaTeX typesetting markup tags and properties that define the document structure and content. Primarily used in academia for creating scientific papers and journal articles, LTX files are plain text documents that can be edited with any text editor, though specialized LaTeX editors like MiKTeX and TeXworks offer helpful syntax highlighting. LaTeX, developed in the early 1980s by Leslie Lamport, is widely used for its precision in document formatting.