1 files changed, 5 insertions, 0 deletions
diff --git a/README b/README
index 8de5310ee..33384ea77 100644
--- a/README
+++ b/README
@@ -333,6 +333,11 @@ Options affecting specific writers
 :   Produce HTML5 instead of HTML4.  This option has no effect for writers
     other than `html`. (*Deprecated:*  Use the `html5` output format instead.)
 
+`--ascii`
+:   Use only ascii characters in output.  Currently supported only
+    for HTML output (which uses numerical entities instead of
+    UTF-8 when this option is selected).
+
 `--reference-links`
 :   Use reference-style links, rather than inline links, in writing markdown
     or reStructuredText.  By default inline links are used.