Lintian tag information: copyright-contains-dh_make-todo-boilerplate (type: error)

Description (from lintian-explain-tags)

The string "Please also look if..." appears in the copyright file, which
indicates that you either didn't check the whole source to find additional
copyright/license, or that you didn't remove that paragraph after having
done so.

Please refer to Copyright information (Section 12.5) in the Debian Policy
Manual for details.

Visibility: error
Show-Always: no
Check: debian/copyright

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