Merge remote-tracking branch 'origin/apg-1.2' into 2021-11_Note

aria-practices.html

@@ -7170,8 +7170,9 @@ <h3>Changes in November 2021 Publication of Version 1.2</h3>
         <li>Revised the combobox pattern and 4 combobox examples to reflect the ARIA 1.2 revisions to combobox.</li>
         <li>Added example illustrating changes in ARIA 1.2 that enable creation of custom select-only comboboxes, which are similar to HTML select elements. This replaces the Collapsible Listbox example, which is now deprecated.</li>
         <li>Added a design pattern and example implementation of the meter role, which is new in ARIA 1.2.</li>
-        <li>Added a new listbox example that illustrates new ARIA 1.2 support for named groups of options in a listbox.</li>
+        <li>Revised the listbox pattern to specify how to utilize the new ARIA 1.2 support for named groups of options and Added a new listbox example to demonstrate the named option group feature.</li>
         <li>Revised the editor menubar example to illustrate new ARIA 1.2 support for named groups of items in a menu.</li>
+        <li>Updated the listbox and tree patterns to reflect current browser processing of aria-selected and provided guidance regarding the use of aria-checked to communicate selection.</li>
         <li>Added a button example that illustrates use of the new ARIA 1.2 IDL interface.</li>
         <li>Added example of a sortable table.</li>
         <li>Added a switch design pattern and three example implementations: one made from a div element, one based on HTML button, and one that uses HTML checkbox input.</li>