The DdfGetFieldComments method syntax has these parts:
DdfGetFieldComments returns a two-byte integer that holds the status of the VAccess control. If this is zero, the operation completed successfully.
DdfGetFieldComments forces a refresh of the field comment information in the VAccess memory image. This will very rarely be needed, as any memory image update from the DDF will automatically refresh this information as well. It would only be needed when RefreshLocations has been set to false and the DDF information has been persisted; comment information is not persisted with other DDF information.
Unlike many of the other dictionary methods and properties, DdfGetFieldComments does not check
RefreshLocations. Since its only purpose is to update information from the DDF, it assumes that it should read directly from the DDF.