Canon EOS-1D X Mark II DSLR Camera (Body Only) - Manual (Page 184)

O Custom White Balance
184
You can also append a name (caption) to the five registered Custom
white balance data (Custom WB No. 1-5).
1
Select the Custom WB number.
On the [ Set Custom WB ] screen,
select the number of the Custom white
balance you want to append a name to.
2
Select [Edit WB name].
3
Enter text.
Operate the < 5 >, < 6 >, or < 9 > to
move the and select the desired
character. Then press <
0 > to enter it.
You can enter up to 20 characters.
To delete a character, press the < L >
button.
To cancel the text entry, press the
<
B > button, then select [ OK ].
4
Exit the setting.
After entering the text, press the
<
M > button, then select [ OK ].
X The information will be saved and the
screen will return to step 2.
X The entered name will be displayed
below <
O *>.
3 Naming the Custom WB Data
Character palette
If you cannot enter text in step 3, press the < Q > button and use the
character palette when the blue frame appears.
Entering a name that indicates the location where you registered the
Custom white balance or the light source type of the registered Custom
white balance is convenient.