This feature is not available in Reader.
Acrobat users can set predefined redaction codes, similar to custom text, to appear over redacted areas. These codes often indicate why the material was redacted. By default, code sets and entries are provided from the U.S. FOIA (Freedom Of Information Act) and the U.S. Privacy Act. Redaction codes can be saved, imported, and exported. This feature modifies the EnterpriseFiles installer table.
Redaction code set files are stored by default at <installation root>\Adobe\<product & version>\<product>\DocSettings\Redaction\<language>. You can also use the Files and Folders feature to add these files.
To add a new code set file:
To remove a code set file:
Codes don’t save the current attributes for overlay text as part of the code definition, such as colors, font characteristics, and repetition or size of text. Codes only make the overlay text itself reusable in future sessions and by other users with whom you share code sets. You set other attributes for the code in the product’s Redaction Tool Properties dialog box.