For example consider:
-The cat in the hat.
+The ox in the box.
Before this change the highlights would be:
-The cat in the hat.
^^^^^^^^^^^^^^
+The ox in the box.
^^^^^^^^^^^^^
After this change the highlights are:
-The cat in the hat.
^^^ ^^^
+The ox in the box.
^^ ^^^
Another example; before:
-The quick brown fox jumped
+The (quick) brown (fox) jumped
^^^^^^^^^^^^^^^^^^^
And after:
-The quick brown fox jumped
+The (quick) brown (fox) jumped
^ ^ ^ ^