The artifact hash prefix 28ec is ambiguous and might mean any of the following:

1. 28ec3e58203c1aabdffbca42bd5dfeba2db0c873105b4d010cd518468e5c901a -

   Manifest of check-in [28ec3e5820] - Initial revision by gawthrop@users.sourceforge.net on 1999-09-07 00:33:44.

2. 28ecc6bfb805ecac9c94ee9d4f268731e202f6d028caacc1a9ce6958b0a2211a -

   Manifest of check-in [28ecc6bfb8] - Updated for new data file parameter/state update by gawthrop@users.sourceforge.net on 2000-05-16 11:59:01.