Press F7 to turn on Caret Browsing. Press it again to turn it off.
Use arrow keys to move throughout the document.
Click anywhere to move the cursor to that location.
Press Shift + arrows to select text.
Hold down Option to move by word.
When you reach a link or control, it is automatically focused. Press Enter to click a link or button.
When a focused control (like a text box or a list box) is capturing arrow keys, press Esc followed by the left or right arrow to continue Caret Browsing.
Alternatively, press Tab to move to the next focusable control.