                                                            November 18, 1996
                                                   1993 Commodity Flow Survey

        Version 1.0            



     Starting The Software     

Make the CD-ROM drive the default drive and type GO and press [Enter].
       Example:  L:\>go         (where "L" is the CD-ROM drive)

For multiple users on a local area network (i.e. LAN option),
type GO LAN and press [Enter].
       Example:  L:\>go lan     (where "L" is the CD-ROM drive)

Note, the "LAN" option will affect the speed of the software to be much
slower.


       Using The CD-ROM        

The software runs on personal computers with 640K RAM operating under
MS-DOS 3.3 or higher.  There are no special display  requirements.  The CD-ROM
is in the ISO 9660 format which requires the use of Microsoft CD-ROM Extensions
Version 2.0 or higher.

At either the opening screen or at the data display screen, there is an option
to display the files found in the sub-directory, DOCUMENT (e.g. Software
features, Record Layouts, Appendixes etc.).  This option also allows the user
to print or copy the ASCII file.

Users of other types of systems, such as the Apple Macintosh, have access
to the files through support for ISO 9660 CD-ROMs.  Please note that the
retrieval software will only run in the MS-DOS environment.


    Contents Of The CD-ROM     


GO.BAT         Batch file to execute data retrieval software.

COMFLOW.EXE    Data retrieval software (Version 1.0).

TABLE_nn.DBF   The data files for each of the 12 tables (nn= 01 through 12;
               there is no table 12 at the state level).
                                        
TABLE_nn.NDX   dbase index files for TABLE_nn.DBF

STATS_nn.DBF   The coefficients of variation or measures of reliability 
               files for each of the 12 tables (nn= 01 through 12).
                                        
STATS_nn.NDX   dbase index files for STATS_nn.DBF


Reference Files (most of the dbase files will have corresponding index files)

COMMOD.DBF     Database file - list of commodities and their codes

COPYFILE.DBF   Empty database file - used to derive structure of files
               created by users with the software's Copy function

COPYFILE.RL    Text file - record layout of each of the user created files;
               also will explain meanings of items in the TABLE and STATS
               files and the codes in the various reference files

DESTIN.DBF     Database file - list of geographic destinations and their 
               codes

DISTANCE.DBF   Database file - list of shipment distance ranges and their 
               codes

GEOAREA.DBF    Database file - list of geographic areas, codes and 
               indentifiers.  

MODE.DBF       Database file - list of transportation modes and their 
               codes (POPCODE is the actual code)

TABLE.DBF      Database file - list of data tables and their table numbers

WEIGHT.DBF     Database file - list of shipment weight ranges and their 
               codes

DOCUMENT.DBF   Database file - list of ASCII documentation files.

DOCUMENT.NDX   dbase index file for DOCUMENT - key field is MENU_CODE

DOCUMENT <DIR> Directory for documentation files.  These are ASCII text files
               which contain complete technical documentation for the data.
               The list below shows each file and it description.


List of documentation files

GO_SOFTW.ASC  GO Software Features                                        
INTRODUC.ASC  Introduction to the Economic Census                         
              Information about the CFS and this Report                   
GENERAL.ASC     General Information                                       
INDCOV.ASC      Industry Coverage                                         
SHIPCOV.ASC     Shipment Coverage                                         
              About the Mileages                                          
CALCULAT.ASC    Mileage Calculations                                      
SPECIAL.ASC     Special Notes on Pipeline Mileages and Average Miles Data 
              Explanation of Terms                                        
MODES.ASC       Mode Definitions                                          
OTHTERMS.ASC    Other Definitions and Terms                               
SYMBOLS.ASC   Abbreviations and Symbols                                   
RELIABLE.ASC  Reliability of the Data                                     
SAMPLE.ASC    Sample Design and Methodology                               
COMMODIT.ASC  About the Commodity Classification System

FOOTnn.TXT    Footnotes on each of the tables (nn= 01 through 12).  These
              are accessed by pressing the "F" key when viewing data.
