# System Parameters

'FO'= | Format Overflow Character

## Description

Assigns the format overflow symbol/character you want returned as fill on format errors. Use the ASCII value of your character. For example, to assign the * (asterisk) as the overflow character, apply either 'FO'=42 or 'FO'=ASC("*").

## Default

'FO'=0 (zero). PxPlus returns Error #43: Format mask invalid.

## See Also

Data Format Masks

## Example

In this example, PxPlus displays six asterisks instead of causing an error:

> set_param 'FO'=asc("*")
> print 123456.78:"##0.00"
> ******