Hi Tom,

Allmost all aspects of format come from NumberFormatInfo class (which is a member of CultureInfo). Among other properties it has XxxxGroupSizes. The Xxx will depend on class of editor: Currency/Numeric/Percent. In order to modify that, you should create an instance of that class, set desired properties and assign it to NumberFormat property of WebNumericEdit. To remove group/thousand separators you may try to use something like [1000] (first group with large number). That can be done anywhere in codes, for example, within Page.OnLoad event.

Installation also provides few samples for custom cultures and formats.