E_GSU_BAD_CONFIG_VAR invalid config variable
E_GSU_NEED_VALUE value required but not given
E_GSU_BAD_BOOL bad value for boolian option
E_GSU_BAD_OPTION_TYPE invalid option type
E_GSU_BAD_ARG_COUNT invalid number of arguments
E_GSU_BAD_CONFIG_VAR invalid config variable
E_GSU_NEED_VALUE value required but not given
E_GSU_BAD_BOOL bad value for boolian option
E_GSU_BAD_OPTION_TYPE invalid option type
E_GSU_BAD_ARG_COUNT invalid number of arguments