To activate a hyperlink using the article popup menu:
(1) First click inside the link with your left mouse button,
or move the text cursor to the link using your keyboard,
or select/highlight the entire link with your mouse,
(2) then right-click on the article, point to "Navigate" and click "Follow hyperlink".
Directly below is an example hyperlink to the TreePad Lite home page:
First select this link using any of the three methods described in point (1) above, then click "Popup menu article: Navigate/Follow hyperlink".