Canon EOS-1D X Mark III Advanced User's Manual page 707

Virtual Keyboard Operations
(1) Input area, for entering text
(2) Cursor keys, for moving in the input area
(3) Current no. of characters/no. available
(4) Keyboard
(5) Switch input modes
(6) Space
(7) Delete a character in the input area
(8) Finish the text entry
Use < > or the <
Press < > to confirm input or when switching input modes.
> or < > dial to move within (2) and (4)–(7).
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