AUCTeX is much enhanced (La) TeX mode for Emacs. AUCTeX is an extensible package for writing and formatting TeX files in GNU Emacs and XEmacs. Here are some key features of "AUCTeX" Editing: Inserting · macros, environments and positions with a single button or via a menu entry. AUCTeX will help you with incentives for the parameters if known and macro environments. There completion of a mechanism for macros written partially available.-The use of keyboard shortcuts for inserting math. fontification Sophisticated · and indentation of TeX / LaTeX macros and environments. · Fold Macros and environments and to show their content or a pre-defined channels instead. You can display the content temporarily withdrawn for editing.Compiling: · Run various TeX / LaTeX interpreters and related programs such as BibTeX or makeindex from Emacs. · show compiler errors running and jump to the respective places in the TeX / LaTeX source code.Viewing: Top · viewers for DVI, PostScript and PDF output from Emacs. • Use of forward and reverse search with viewers.Extensibility DVI and customization: • Support for macros and environments of many TeX / LaTeX packages with the use of style files. · easily expandable by writing your own style files. · Many aspects of AUCTeX can be tailored to fit your work style staff through the mechanism provided by Emacs.What customize 's New in this version: • A new function TeX-doc' to access docs on cc?. • New "Clean" and "Clean All" command for intermediate and output files. pdfsync support (forward search in pdf files). · LaTeX comes with its own toolbar enabled by default. · Some bugs have been fixed.