DIF Revision History

Definition

A listing of changes made to the DIF over time. Provides a mechanism for tracking revisions to DIF content.

Syntax

Group: DIF Revision History

End_Group

Specifications

This field is optional
This field may be used only once
Multiple lines of text are allowed, each line containing a maximum of 80 characters. Characters may be selected from the printable ASCII character set.

Recommendations

Append text to the end of existing text each time the DIF is revised

Example

Group: DIF Revision History 
   1996-09-05, Jane Doe, DIF author, changed PI telephone number
   1997-11-03, global update, changed Data_Center_URL
   1998-05-22, populated new fields for version 6
   1998-07-10, updated geophysical parameters, automated process
End_Group

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