NDF_HCRE - Ensure that a history component exists for an NDF

Description:

The routine ensures that an NDF has a history component, creating a new one if necessary. No action is taken if a history component already exists.

Invocation:

CALL NDF_HCRE( INDF, STATUS )

Arguments:

INDF = INTEGER (Given)

NDF identifier.

STATUS = INTEGER (Given and Returned)

The global status.

Notes:

A history component may be removed from an NDF by calling NDF_RESET with a component name of 'History'.