merging programs.
* EDT: (edt). An Emacs emulation of the EDT editor.
* EIEIO: (eieio). An object system for Emacs Lisp.
+* ERT: (ert). Emacs Lisp regression testing tool.
* Eshell: (eshell). A command shell implemented in Emacs Lisp.
* Flymake: (flymake). A universal on-the-fly syntax checker.
* Forms: (forms). Emacs package for editing data bases