Nikon D6 Reference Manual page 300

A
Fine-Tuning Preset Manual White Balance
The selected preset can be fine-tuned by
selecting [Fine-tune] in the preset manual
white balance menu.
A
"Edit Comment"
To enter a descriptive comment of up to 36
characters for the current white-balance
preset, select [Edit comment] in the preset
manual white balance menu. Enter a comment
as described in "Text Entry" ( 0 86).
A
"Protect"
To protect the current white-balance preset,
select [Protect] in the preset manual white
balance menu. Highlight [On] and press J ; the
current white balance preset is now protected.
The preset cannot be modified as long as [On]
is selected for [Protect].
248
Achieving Natural Colors with Different Light Sources (White Balance)