GPSSYNC Revision History
------------------------

     Each released version of GPSSYNC uses a four digit revision code such 
as 9838. The first two digits indicate the year and the second two digits 
indicate the week of the year. In some cases, an additional letter suffix 
is added to distinguish changes occurring within the same week or to 
identify special versions. A partial week at the beginning or end of the 
year is counted as a full week. Using this method, a year will typically 
have 53 weeks although it is possible to have 54 weeks in a leap year (1972 
is an example). The current year-week revision code is shown on the Julian 
Date display, Display Mode 7, in my program ASTROCLK.
     This file records the revision history of program GPSSYNC through all 
of the minor twists and turns that usually accompany the evolution of such 
a program. These notes may also be helpful to users who are upgrading from 
one version to another to find out what has changed.

                             David H. Ransom, Jr.
                             e-mail: rans7500@spacelink.nasa.gov
                             Home Page: http://www.dransom.com
                                        http://tie.jpl.nasa.gov/dransom/


Version 9838 -- September 1998
------------------------------
-This is a MAJOR UPDATE and incorporates a wide variety of changes and 
improvements (including those made in Beta Version 9837 which was not 
released publicly). Review this documentation for details of the updates 
and changes.
-The structure of file GPSSYNC.INI has changed substantially from Version 
9817. 

                               *************
                               *  CAUTION  *
                               *************

         If you have used GPSSYNC Version 9817, please delete 
         file GPSSYNC.INI prior to executing Version 9838; a new 
         file will automatically be created.


Version 9837 -- September 1998
------------------------------
-Beta Version for testing, not released publicly.


Version 9817 -- April 1998
--------------------------
-Initial public release