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### 9.2 AUCTeX — enhanced TeX modes with debugging facilities

AUCTeX is a set of sophisticated major modes for TeX, LaTeX, ConTeXt, and Texinfo offering context-sensitive syntax highlighting, indentation, formatting and folding, macro completion, TeX shell functionality, and debugging. Be also sure to check out RefTeX. Current versions of AUCTeX include the preview-latex package for WYSIWYG previews of various LaTeX constructs in the Emacs source buffer.

AUCTeX