Editing XEmacs (section)

==Features==
XEmacs has commands to manipulate [[Word (linguistics)|word]]s and [[paragraph]]s (deleting them, moving them, moving through them, and so forth), [[syntax highlighting]] for making [[source code]] easier to read, and "keyboard macros" for performing arbitrary batches of editing commands defined by the user.

XEmacs has comprehensive online help, as well as five manuals available from the XEmacs website. XEmacs supports many [[Language|human languages]] as well as editing-modes for many programming and markup-languages. XEmacs runs on many operating systems including [[Unix]]/[[Linux]], [[Berkeley Software Distribution|BSDs]] and [[macOS|Mac OS X]].  Running on Mac OS requires [[X11.app|X11]]; while development has {{As of|2007|alt= started}} on a native [[Carbon (computing)|Carbon]] version. Two versions of XEmacs for the Microsoft Windows environment exist: a native installer and a [[Cygwin]] package.

Users can reconfigure almost all of the functionality in the editor by using the [[Emacs Lisp]] language.  Changes to the Lisp code do not require the user to restart or recompile the editor. Programmers have made available many pre-written Lisp extensions.

Many packages exist to extend and supplement the capabilities of XEmacs.  Users can either download them piecemeal through XEmacs' [[package manager]] or apply them in bulk using the xemacs-sumo package or "[[sumo]] tarballs".<ref>{{cite web|url=http://www.xemacs.org/Documentation/packageGuide.html|title=XEmacs: Quickstart Package Guide|author=john s jacobs anderson using old content with no listed author|website=Xemacs.org|access-date=1 December 2014}}</ref> The package manager in XEmacs predates the ELPA package system used by GNU Emacs by almost a decade and is incompatible with it. Since XEmacs 21.1 functionality has been moved out of XEmacs core and made available separately as packages. This allows users to exclude packages they have no need for. XEmacs had a package manager for over a decade before GNU Emacs developed one, but XEmacs must be restarted before new packages are loaded.