String display formats can have two sections. The first is required and contains the format for strings; the second is optional and specifies how to represent NULLs:
string-format;null-format
In a string format mask, each at-sign (@) represents a character in the string and all other characters represent themselves.
Special characters for string edit masks
String edit masks use different special characters. See “The EditMask edit style”.
This format mask:
[red](@@@) @@@-@@@@
displays the string 800YESCELT in
red as:
(800) YES-CELT
