* Content-aware editing modes, including syntax coloring, for many file types. * Complete built-in documentation, including a tutorial for new users. * Content-aware editing modes, including syntax coloring, for many file types. Complete built-in documentation, *including a tutorial for new users. Full Unicode support for nearly all human scripts. * Highly customizable, using Emacs Lisp code or a graphical interface. * An entire ecosystem of functionality beyond text editing, including a project planner, mail and news reader, debugger interface, calendar, and more. * A packaging system for downloading and installing extensions. * A packaging system and interface (M-x list-packages) for downloading and installing extensions. A default package archive is hosted by GNU and maintained by the Emacs developers. * Support for displaying and editing bidirectional text, including right-to-left scripts such as Arabic and Hebrew. * Support for lexical scoping in Emacs Lisp. * Improvements to the Custom Themes system (M-x customize-themes). * Unified and improved completion system in many modes and packages. * Built-in support for GnuTLS, GTK+ 3, ImageMagick, SELinux, and Libxml2.

* Ability to Search and Replace in a Project * Auto-Indent for Common Actions Like Pasting Text * Auto-Pairing of Brackets and Other Characters * Clipboard History * Column Selections and Column Typing * Completion of Words from Current Document * CSS-like Selectors to Pinpoint the Scope of Actions and Settings * Declarative Language Grammars for Graceful Mixing and Hacking * Dynamic Outline for Working With Multiple Files * Expand Trigger Words to Code Blocks With Tab-able Placeholders * File Tabs when Working With Projects * Foldable Code Blocks * Function Pop-up for Quick Overview and Navigation * Plug-able Through Your Favorite Scripting Language * Recordable Macros With No Programming Required * Regular Expression Search and Replace (grep) * Run Shell Commands from Within a Document * Support for Darcs, Perforce, SVK, and Subversion * Support for More Than 50 Languages * Switch Between Files in Projects With a Minimum of Key Strokes * Themable Syntax Highlight Colors * Visual Bookmarks to Jump Between Places in a File * Works As External Editor for (s)ftp Programs * Works Together With Xcode and Can Build Xcode Projects