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Running DIFROM to Export Data (2 of 17)

Preliminary Validations

DIFROM compares the version number from the second line of the DIFROM routine with the VA FileMan version node from the M Operating System file. This node is ^DD("VERSION"). If the version numbers do not match, an error message is displayed and the program exits.

DIFROM then makes sure DUZ(0)["@". If not, the developer will see an error message and the program exits.


Reviewed/Updated: March 10, 2007