fourth round of fixes for #78: tweak mathml.rst, fix #84

index.rst

@@ -80,6 +80,7 @@ MathJax Configuration Options
 .. toctree::
     :maxdepth: 1
 
+    The HTML-CSS floats extension <options/floats>
     The CHTML-preview options <options/CHTML-preview>
     The Content MathML options <options/Content-MathML>
     The experimental MML3 extension <options/MML3>

options/MML3.rst

@@ -16,7 +16,7 @@ call. For example,
       }
     });
 
-The extension has no configuration options. 
-
 The extension provides experimental support for the so-called elementary math 
-elements as well as experimental support for bidirectional math.
+elements as well as experimental support for bidirectional math.
+
+The extension has no configuration options. 

options/handle-floats.rst

@@ -0,0 +1,24 @@
+.. _configure-handle-floats:
+
+***************************
+The handle-floats extension
+***************************
+
+The floats extension for the HTML-CSS output is run when you include 
+``handle-floats.js`` in the ``extension`` array of the HTML-CSS section of your
+:meth:`MathJax.Hub.Config()` call. For example,
+
+.. code-block:: javascript
+
+    MathJax.Hub.Config({
+      "HTML-CSS": {
+        extensions: ["handle-floats.js"]
+      }
+    });
+
+This extension allows HTML-CSS output to deal with floating elements
+better. In particular, when there are tags or equation numbers, these
+would overlap floating elements, but with this extension, the width of
+the line should properly correspond to the amount of space remaining.
+
+The extension has no configuration options.