!!!NUMBER FORMAT MODELS for TO_CHAR
This table lists the number format elements.  You can use any combination of these elements as the format argument of the TO_CHAR function.

||Parameter||Example||	Explanation
|9         | ‘9999’   | Number of “9”s determines the length of the returned character
|0         | ‘0999’   | Prefixes value with leading zeroes
|$         | ‘$9999’  | Prefixes value with a dollar sign
|B         | ‘B9999’  | Returns zero value as a blank, instead of as 0
|MI        | ‘9999MI’ | Returns ‘-‘ after negative values.  Note that by default, a space is left in front of any number value converted to character, to allow for the possibility of a negative sign.
|S         | ‘S9999’  | Returns ‘+’ for positive values and ‘-‘ for negative values.
|PR        | ‘9999PR’ | Returns negative values in <angle brackets>.
|,         | ‘9,999’  | Returns a comma in this position (Thousands separator)
|.         | ’99.99’  | Returns a period in this position. (Decimal point)
|V or v    | ‘999V99’ | Returns the value by 10n where n is the number of “9”s after the “V” (implied decimal point)
|RN or rn  | RN       | Upper or lowercase Roman numerals (for integers in range 1 ..3999)