add note about "markupbase" not being intended for direct use

(closes SF bug #736659, patch #901369)

diff --git a/Lib/markupbase.py b/Lib/markupbase.py
index b8d8d5d27edb4f7b16e36f683d63df4c99485d06..3d00a74a92e9d68279139c7a5fa42b4edb2bc601 100644 (file)
--- a/Lib/markupbase.py
+++ b/Lib/markupbase.py
@@ -1,4 +1,10 @@
-"""Shared support for scanning document type declarations in HTML and XHTML."""
+"""Shared support for scanning document type declarations in HTML and XHTML.
+
+This module is used as a foundation for the HTMLParser and sgmllib
+modules (indirectly, for htmllib as well).  It has no documented
+public API and should not be used directly.
+
+"""
 
 import re