Masks use the following notation conventions:
A |
Indicates character is an alphabetic letter (a-z or A-Z) |
N |
Indicates character is a numeral (0-9) |
<special_char> |
Represents a special character, such as @, &, %, or punctuation, exactly as it appears in the word or phrase |
If a data value contains a special character, that is, a character that is not a number or a letter, it is shown exactly as it appears in the data value, including spaces.