To move up or down a screen: use the /
buttons to move the highlight.
To move from one tab to another: use the /
buttons.
To turn a check-box on or off: highlight it and press
Select.
To select from a combo-box: highlight it and press
Select to activate, then use
/
to select.
To operate a button: highlight it and press
Select.
To edit a text field: highlight it and press Select to enter edit mode. Edit the text and then press
Select again to leave edit mode. While in edit mode, the
/
/
/
buttons will navigate within the text rather than between fields.