diff --git a/extra/sass-mode.el b/extra/sass-mode.el
index 077e4766..3b313b31 100644
--- a/extra/sass-mode.el
+++ b/extra/sass-mode.el
@@ -42,8 +42,9 @@
 (defvar sass-non-block-openers
   '("^ *:[^ \t]+[ \t]+[^ \t]"
     "^ *[^ \t:]+[ \t]*[=:][ \t]*[^ \t]")
-  "A list of regexps that match lines of Sass that couldn't have
-text nested beneath them.")
+  "A list of regexps that match lines of Sass that don't open blocks.
+That is, a Sass line that can't have text nested beneath it
+should be matched by a regexp in this list.")
 
 ;; Font lock
 
@@ -93,18 +94,18 @@ text nested beneath them.")
     ("\\(\\w+\\)\s*="  1 font-lock-variable-name-face sass-highlight-script-after-match)
     ("\\(:\\w+\\)\s*=" 1 font-lock-variable-name-face sass-highlight-script-after-match)
     (".*"      sass-highlight-selector))
-  "A list of full-line Sass syntax to highlight,
-used by `sass-highlight-line'.
+  "A list of full-line Sass syntax to highlight, used by `sass-highlight-line'.
 
 Each item is either of the form (REGEXP SUBEXP FACE), (REGEXP FN),
-or (REGEXP SUBEXP FACE FN). Each REGEXP is run successively on the
+or (REGEXP SUBEXP FACE FN).  Each REGEXP is run successively on the
 beginning of non-whitespace on the current line until one matches.
 If it has SUBEXP and FACE, then SUBEXP is highlighted using FACE.
 If it has FN, FN is run.")
 
 (defun sass-highlight-line (limit)
-  "Highlight a single line using some Sass single-line syntax,
-taken from `sass-line-keywords'."
+  "Highlight a single line using some Sass single-line syntax.
+This syntax is taken from `sass-line-keywords'.
+LIMIT is the limit of the search."
   (save-match-data
     (when (re-search-forward "^ *\\(.+\\)$" limit t)
       (goto-char (match-beginning 1))
@@ -121,8 +122,7 @@ taken from `sass-line-keywords'."
             (return t)))))))
 
 (defun sass-highlight-selector ()
-  "Highlight a CSS selector starting at `point'
-and ending at `end-of-line'."
+  "Highlight a CSS selector starting at `point' and ending at `end-of-line'."
   (let ((font-lock-keywords sass-selector-font-lock-keywords)
         font-lock-multiline)
     (font-lock-fontify-region
@@ -139,10 +139,12 @@ and ending at `end-of-line'."
         (font-lock-fontify-region beg end)))))
 
 (defun sass-highlight-script-after-match ()
+  "Highlight a section of SassScript after the last match."
   (end-of-line)
   (sass-highlight-script (match-end 0) (point)))
 
 (defun sass-highlight-directive ()
+  "Highlight a Sass directive."
   (goto-char (match-end 0))
   (block nil
     (case (intern (match-string 1))
@@ -188,7 +190,7 @@ and ending at `end-of-line'."
 ;; Indentation
 
 (defun sass-indent-p ()
-  "Returns t if the current line can have lines nested beneath it."
+  "Return non-nil if the current line can have lines nested beneath it."
   (loop for opener in sass-non-block-openers
         unless (looking-at opener) return t
         return nil))