This is a very simple test of APPLICATION and DOCUMENT ARIA roles. Use the TAB key to move between the following two groups of elements. The first group is marked with the ARIA role of APPLICATION, while the second one is marked with the role of DOCUMENT. When the screen reader encounters the role of APPLICATION, the cvirtual buffer should be turned off. When the role of DOCUMENT is encountered, the cvirtual buffer should be turned back on.
This paragraph is really about nothing in particular. However, a coupel of links are in order: