diff --git a/README.org b/README.org
index b20b9d3..f024d34 100644
--- a/README.org
+++ b/README.org
@@ -3,7 +3,7 @@
 
 [[https://melpa.org/#/smog][file:https://melpa.org/packages/smog-badge.svg]]
 
-A simple way to analyse the writing style, word use and readability of prose in Emacs. 
+A simple way to analyse the writing style, word use and readability of prose in Emacs.
 
 It can be used by calling =smog-check-buffer= or =smog-check-region= on the selected region.
 
@@ -23,15 +23,17 @@ To install on macOS
 brew install style
 #+END_SRC
 
+To install from source, download from http://ftp.gnu.org/gnu/diction/
+
 ** Configure
 
-The package can be installed from [[https://melpa.org/][MELPA]] or manually via [[https://github.com/zzkt/smog][github]].
+The emacs package can be installed from [[https://melpa.org/][MELPA]] or manually via [[https://github.com/zzkt/smog][github]].
 
 #+BEGIN_SRC emacs-lisp
 (use-package smog)
 #+END_SRC
 
-To configure language or output options, =setq= or customize the =smog-command= variable. 
+To configure language or output options, =setq= or customize the =smog-command= variable.
 
 The default language is set to =en= (English) and can be changed to =de= for German or =nl= for Dutch. Details for the various output options can be found via =style -h= or =man style= in your shell of choice.
 
@@ -49,10 +51,9 @@ e.g. to analyse a text in German and show sentences longer than 23 words…
 
 ** Analyse surface detail
 
-=M-x smog-check-buffer= and/or =M-x smog-check-region=
+=M-x smog-check=
 
-** Further 
+** Further
   - [[https://wiki.christophchamp.com/index.php?title=Style_and_Diction][style]] is written by Michael Haardt with contributions from Jason Petrone, Uschi Stegemeier and Hans Lodder
   - [[https://files.eric.ed.gov/fulltext/ED506404.pdf][The Classic Readability Studies]]. William H.DuBay, Editor
   - [[https://en.wikipedia.org/wiki/Asemic_writing][Asemic writing]]
-
diff --git a/smog.el b/smog.el
index f798e6f..e51128f 100644
--- a/smog.el
+++ b/smog.el
@@ -36,7 +36,7 @@
 ;; Measure Of Gobbledygook“). It also summarises word usage and provides
 ;; information about sentence and paragraph structure.
 ;;
-;; M-x smog-check-buffer
+;; M-x smog-check
 
 
 ;;; Code:
@@ -93,7 +93,7 @@ The <<<Lix>>> formula developed by Bjornsson from Sweden is very simple and empl
 
 ** SMOG-Grading
 
-The <<<SMOG-Grading>>> for English texts has been developed by McLaughlin in 1969. Its result is aschool grade.
+The <<<SMOG-Grading>>> for English texts has been developed by McLaughlin in 1969. Its result is a school grade.
 
 *SMOG-Grading* = square root of (((wds >= 3 syll)/sent)*30) + 3
 
@@ -132,12 +132,11 @@ Further details can be found in the =style(1)= man page.\n"
   "Is the style command installed?"
   (let ((program "style"))
     (unless (executable-find program)
-      (message "The program 'style' isn't installed or can't be found."))
+      (message "The program 'style' isn't installed or can't be found.\nTry installing the 'diction' package for your OS or download the source from http://ftp.gnu.org/gnu/diction/"))
     (eq 0 (condition-case nil
 	      (call-process program)
 	    (error (message "The program 'style' test run exit abnormally."))))))
 
-;;;###autoload
 (defun smog-check-buffer ()
   "Analyse the surface characteristics of a buffer."
   (interactive)
@@ -166,8 +165,8 @@ Further details can be found in the =style(1)= man page.\n"
 	  (org-update-radio-target-regexp))))))
 
 ;;;###autoload
-(defun smog-check-region ()
-  "Analyse the surface characteristics of a selected region."
+(defun smog-check ()
+  "Analyse the readability and word use of a selected region or buffer."
   (interactive)
   (when (smog--style-installed-p)
     (let* ((smog-buffer (current-buffer))