NumberConverter is for the most part self explanatory. Run it with the flag -h for command-line usage information. By default, it reads a configuration file named .numberconverterrc (except on MS Windows, where it is named NumberConverterInit). Lines beginning with a cross-hatch (#) character are ignored. The following flags may be set in this file: Balloon_Help_P Generate_Roman_With_Bar_P Input_Base Output_Base General_Group_Size First_Group_Size Separator_Character The first two flags are Booleans and may be set to any of the obvious Boolean values, e.g. 1, T, Yes, True, on for True, 0, F, No, False, off for False. Case is irrelevant. The underscores may be omitted or replaced with hyphens or spaces. The syntax is: set <variable> <value>, e.g. set Input_Base 8 set Balloon_Help_P 0