diff --git a/docs/html/_sources/output.txt b/docs/html/_sources/output.txt
index 5acf5fcae..8c1d37c67 100644
--- a/docs/html/_sources/output.txt
+++ b/docs/html/_sources/output.txt
@@ -150,11 +150,49 @@ NativeMML output processor, you are making a trade-off: gaining speed
at the expense of quality and reliability, a decision that should not
be taken lightly.
+.. _automatic-linebreaking:
+
+Automatic Line Breaking
+=======================
+
+The HTML-CSS and SVG output processors implement (most of) the MathML3
+automatic line-breaking specification. (The NativeMML output
+processor relies on the browser's native MathML support to handle line
+breaking when it is used.) Since line-breaking takes extra processing
+and so can slow down the mathematical output, it is off by default,
+but you can enable it by adding
+
+.. code-block:: html
+
+
+
+to your page just before the ``
+
+to your page just before the ``