(a) Except as allowed under paragraph (b) of this section, the submitter shall use the graphical redaction (blackout) method to redact non-public information from the materials. The submitter shall blackout only the information that is claimed to be non-public.

(b) The submitter shall justify using any other redaction method. The application for non-public treatment shall state with particularity the competitive harm or practical difficulty alleged to result from using the blackout method. The submitter shall specifically identify any alterations made to the unredacted version, including the location and number of lines or pages removed.

(c) If electronic, the redacted version shall be filed in a searchable format, unless the submitter certifies that doing so would be impracticable.