The default OpenEdge environment specifies a set of fonts to be used with the OpenEdge Tools. On Windows, these fonts are MS Sans Serif (a proportional font) and Courier New (a fixed-space font). If you have not added custom fonts to your environment, OpenEdge uses these default fonts for your application. OpenEdge uses the default proportional font for alphanumeric data, and the default fixed font for integer fields and for fields with format strings containing fill characters (such as 9 or X).