You can use any of the following characters to create a format expression for strings:
| Character | Description |
|---|---|
| @ | Character placeholder |
| Display a character or a space. If the string has a character in the position where the @ appears in the format string, display it; otherwise, display a space in that position. Placeholders are filled from right to left unless there is an ! character in the format string. | |
| & | Character placeholder |
| Display a character or nothing. If the string has a character in the position where the & appears, display it; otherwise, display nothing. Placeholders are filled from right to left unless there is an ! character in the format string. | |
| < | Force lowercase |
| Display all characters in lowercase format. | |
| > | Force uppercase |
| Display all characters in uppercase format. | |
| ! | Force left to right fill of placeholders |
| The default is to fill from right to left. |