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Secondary indentation

Fiber disturbance(s) not caused by the act of writing or other dynamic actions, rather caused by dynamic contact with the embossed side of an indentation(s) or other raised surface.

Date Added to Lexicon
Standard Source (Designation Number Title of Standard. Publisher, Place, Year.)
ANSI/ASB 044 Standard for Examination of Documents for Indentations. AAFS Academy Standards Board (ASB), 410 North 21st Street, Colorado Springs, CO 80904, 2019. Source link