The Cost Coding field flag (flag number 128) prints the field in the Encrypted Format. Cost Coding prevents Customers from reading an item's Cost (or price). Cost Coding works with both cost and price fields. Technically, any numeric field may be encrypted (letters and other non-numeric characters are discarded).
When the the Cost Coding flag is enabled for a numeric field, the digits are encrypted.
When the Cost Coding flag is disabled for a numeric field, the digits are not encrypted.
The Cost Coding field flag applies to both Labels and Reports.
See:
Report/Label Editor - Field Flags - All
Report/Label Editor Contents