‘The accuracy of the actual wind’ is a meaningless statement; the wind is the wind but to construct our DR position we are relying on an estimate of the wind or forecast wind because we don’t know for sure what the actual wind is.   Statements “the accuracy of the adjustment of the position lines for the motion of theaircraft between the last fix and the DR-position”.and “the accuracy of the adjustment of the position lines for the motion of the aircraft between the last and the new DR-positio” infer that position lines have been obtained since the last fix which means that we are able to positively fix the aircraft’s position rather than rely on en estimated, or DR, position.