1 files changed, 6 insertions, 1 deletions

diff --git a/lisp/textmodes/ispell.el b/lisp/textmodes/ispell.el
index 9dfa9f3c448..5c77e03b0b2 100644
--- a/lisp/textmodes/ispell.el
+++ b/lisp/textmodes/ispell.el
@@ -394,7 +394,12 @@ for language-specific arguments."
   "Indicates whether ispell should skip spell checking of SGML markup.
 If t, always skip SGML markup; if nil, never skip; if non-t and non-nil,
 guess whether SGML markup should be skipped according to the name of the
-buffer's major mode."
+buffer's major mode.
+
+SGML markup is any text inside the brackets \"<>\" or entities
+such as \"&amp;\".  See `ispell-html-skip-alists' for more details.
+
+This variable affects spell-checking of HTML, XML, and SGML files."
   :type '(choice (const :tag "always" t) (const :tag "never" nil)
                  (const :tag "use-mode-name" use-mode-name))
   :group 'ispell)