Remove ambiguities and convert to specifics

README.org

@@ -23,9 +23,11 @@ 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)
@@ -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
   - [[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]]
-

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:
@@ -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))