Improve some descriptions

core/prelude-packages.el

@@ -10,7 +10,8 @@
 ;;; Commentary:
 
 ;; Takes care of the automatic installation of all the packages required by
-;; Emacs Prelude.
+;; Emacs Prelude.  This module also adds a couple of package.el extensions
+;; and provides functionality for auto-installing major modes on demand.
 
 ;;; License:
 
@@ -33,6 +34,8 @@
 (require 'cl-lib)
 (require 'package)
 
+;;;; Package setup and additional utility functions
+
 ;; accessing a package repo over https on Windows is a no go, so we
 ;; fallback to http there
 (if (eq system-type 'windows-nt)
@@ -128,6 +131,8 @@ removing unwanted packages."
   (package-show-package-list
    (cl-set-difference package-activated-list prelude-packages)))
 
+;;;; Auto-installation of major modes on demand
+
 (defmacro prelude-auto-install (extension package mode)
   "When file with EXTENSION is opened triggers auto-install of PACKAGE.
 PACKAGE is installed only if not already present.  The file is opened in MODE."