This method opens a built-in dialog box to set formatting attributes for the specified pagenumber field.
Specifies the identifier of the marked text field for which attributes are changed. It must be a field of the type txFieldPageNumber or txFieldAllPages. The field type can be set with the FieldType property.
The method returns True when the user has changed one or more attibutes and the dialog box has been left with Ok. The method returns False when the dialog has been left with Cancel.