Canon EOS-1D X Mark II DSLR Camera (Body Only) - Manual (Page 209)

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3 Setting Copyright Information
When you select [ Display copyright
info. ] in step 2, you can check the
[ Author ] and [ Copyright ] information
that you entered.
When you select [ Delete copyright information ] in step 2, you can
delete the [ Author ] and [ Copyright ] information.
Checking the Copyright Information
Deleting the Copyright Information
If the entry for “Author” or “Copyright” is long, it may not be displayed
entirely when you select [
Display copyright info. ].
If you cannot enter text in step 3, press the < Q > button and use the
character palette when the blue frame appears.
You can also set or check the copyright information with EOS Utility
(EOS software, p.552).