The following format specifiers can be used to change how your data is displayed and are restricted to the Data Type you select for this column.  For example, to display your data as a currency you would set the Data Type to Integer and the Format to "C".  In the information below you will see that the format specifier "C" will format your data into a currency (like $123.46).

Below is a list a Format Specifiers you can enter as your field format.  Next to the format specifier is the name of the format and an example.