> the function keys can also be used in a shift mode.
I think you mis-read that; it does not appear to relate to keyboard
operation, but rather the 'Shifted Menu Keys' and 'Shifted Menu Keys'.
See pg 23 (cut & pasted below):
Key Shortcuts
The HD-P2's keys are mapped to the most commonly
used functions, to quickly perform an action or navigate
to a menu. There are additional key shortcuts that,
while not necessary to the more common operations of
the HD-P2, might prove useful in some situations.
Shortcuts
Shifted MENU Keys
Pressing and holding the MENU key and pressing one of
these additional keys will perform the following menu
shortcut:
MENU-PROJECT - Jump to Change/New Project Menu
MENU-DISPLAY - Jump to System Menu
MENU-SELECT - Jump to Project File List Menu
MENU-RETAKE - Jump to Project Trash List Menu
MENU-MARKER - Jump to Project Marker List Menu
MENU-TIMECODE - Jump to Project Timecode Settings (if
enabled)
Shifted STOP Keys
Similarly, there are four shortcuts that use the STOP key
as a shift key.
STOP-RETAKE - Perform Retake without Warning Dialog
STOP-REW - Locate to beginning of recorded audio