diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index c5215cc..e81d55b 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -428,8 +428,14 @@
 shorter and valid HTML 4 file), use: >
    :let g:html_use_css = 1
 
-Closed folds are put in the HTML as they are displayed.  If you don't want
-this, use the |zR| command before invoking 2html, or use: >
+Concealed text is removed from the HTML and replaced with the appropriate
+character from |syn-cchar| or 'listchars' depending on the current value of
+'conceallevel'. If you always want to display all text in your document,
+either set 'conceallevel' to before invoking 2html, or use: >
+   :let g:html_ignore_conceal = 1
+
+Similarly, closed folds are put in the HTML as they are displayed.  If you
+don't want this, use the |zR| command before invoking 2html, or use: >
    :let g:html_ignore_folding = 1
 
 You may want to generate HTML that includes all the data within the folds, and