Image em_red_add_col.png shows the following components, from top to bottom:

• From top to bottom, the following: Column menu, Column Datatype Sensitive Column Type menu, Redaction Format menu, Redaction Function menu, followed by a label describing the currently selected redaction function

• The Function Attributes region, which has the following, from top to bottom, based on a selection of the REGEX redaction function

  • Pattern (Specifies the regular expression pattern to be searched. Example: '\d\d\d\d\d\d678' for number like '012345678')

  • Replace String (Example: Use 'XXXXXX\3' (replace string) to redact '012345678' (actual value) which matches '(\d\d\d) (\d\d\d) (\d\d\d)' (regexp pattern) to 'XXXXXX678' (redacted value). Note that the '\3' in the replace string preserves the actual data in the third set of parentheses in the pattern.)

  • Position (Specifies the starting position of the string search. The default is 1, meaning it begins the search from the first character of column data.)

  • Occurrence (Specifies how to perform the search and replace operation. Zero means it replaces all occurrences. Positive integer 'n' would replace nth occurrence of the string.)

  • Match Parameter menu (Specifies the matching parameters for the REGEX redaction function.)

• At the lower right corner, from left to right, the buttons OK and Cancel