diff --git a/lisp/ox-html.el b/lisp/ox-html.el
index f45784e22..5ad5ee10a 100644
--- a/lisp/ox-html.el
+++ b/lisp/ox-html.el
@@ -195,28 +195,31 @@ for the JavaScript code in this tag.
(defconst org-html-style-default
""
"The default style specification for exported HTML files.
@@ -926,20 +929,21 @@ You can also customize this for each buffer, using something like
(defcustom org-html-postamble 'auto
"Non-nil means insert a postamble in HTML export.
-When t, insert a string as defined by the formatting string in
-`org-html-postamble-format'. When set to a string, this
-string overrides `org-html-postamble-format'. When set to
-'auto, discard `org-html-postamble-format' and honor
-`org-export-author/email/creator-info' variables. When set to a
-function, apply this function and insert the returned string.
-The function takes the property list of export options as its
-only argument.
+When set to 'auto, check against the
+`org-export-with-author/email/creator/date' variables to set the
+content of the postamble. When set to a string, use this string
+as the postamble. When t, insert a string as defined by the
+formatting string in `org-html-postamble-format'.
+
+When set to a function, apply this function and insert the
+returned string. The function takes the property list of export
+options as its only argument.
Setting :html-postamble in publishing projects will take
precedence over this variable."
:group 'org-export-html
:type '(choice (const :tag "No postamble" nil)
- (const :tag "Auto preamble" 'auto)
+ (const :tag "Auto postamble" 'auto)
(const :tag "Default formatting string" t)
(string :tag "Custom formatting string")
(function :tag "Function (must return a string)")))
@@ -989,9 +993,11 @@ like that: \"%%\"."
(defcustom org-html-preamble t
"Non-nil means insert a preamble in HTML export.
-When t, insert a string as defined by one of the formatting
-strings in `org-html-preamble-format'. When set to a
-string, this string overrides `org-html-preamble-format'.
+When t, insert a string as defined by the formatting string in
+`org-html-preamble-format'. When set to a string, use this
+formatting string instead (see `org-html-postamble-format' for an
+example of such a formatting string).
+
When set to a function, apply this function and insert the
returned string. The function takes the property list of export
options as its only argument.
@@ -1019,7 +1025,10 @@ preamble itself. This format string can contain these elements:
%d stands for the date.
If you need to use a \"%\" character, you need to escape it
-like that: \"%%\"."
+like that: \"%%\".
+
+See the default value of `org-html-postamble-format' for an
+example."
:group 'org-export-html
:type '(alist :key-type (string :tag "Language")
:value-type (string :tag "Format string")))