Справочник Пользователя для Psion Inc PX750BT

The [FN/BLUE] and [FN/ORANGE] modifier keys provide access to additional keys and 
system functions. These functions are colour coded in orange and blue print above the 
keyboard keys.

The [SHIFT], [CTRL], [ALT], [FN/BLUE] and [FN/ORANGE] keys are modifier keys. 
Pressing a modifier key changes the function of the next key pressed. 

The [SHIFT], [CTRL] and [ALT] keys operate much like a desktop keyboard except that 
they are not chorded (two keys held down simultaneously). The modifier key must be 
pressed first followed by the key whose function you want modified.

When a modifier key is pressed once, it is displayed in lowercase letters in the taskbar at the 
bottom of the hand-held screen. For example, if the [CTRL] key is pressed, ctrl key is dis-
played at the bottom of the unit screen. Once the next key is pressed, the modifier key 
becomes inactive and disappears from the taskbar. 

Keep in mind, however, that the ‘One Shot’ function allows you to determine how many key 
presses will lock a modifier key ‘on’ – one press or two. Refer to “Keyboard One Shot 
Modes” on page 90 for details.

When a modifier key is pressed twice, it is ‘locked’ on. A ‘locked’ modifier key is displayed 
in uppercase letters in the taskbar. For example, pressing the [CTRL] key twice locks it on – 
it is displayed as CTRL KEY in the taskbar at the bottom of the computer screen.

The locked modifier key will remain active until it is pressed a third time to unlock or turn it 
off. Once a modifier key is unlocked, the uppercase representation at the bottom of the 
screen is no longer displayed.

The [SHIFT] key is used to display uppercase alpha characters and provide access to the 
symbols above the numeric keys.

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