Custom Formats

Custom formats are unique formats you create. You specify text to be inserted in an input string and where the text is to be inserted.

For example, assume the input string is "123456789" and the custom format string is "3,-,2,-". This format takes the first three characters of the input string and inserts a hyphen(-), then takes the next two characters of the input string and inserts a hyphen (-), then appends the remainder of the input string.
The result is: 123-45-6789.