Thanks 2 Sheds for the definition. I wish controllers would therefore use it as it is defined! There have been lots of occasions where I have been cleared to such and such a holding point, and then as I get near to it the ATC tells me to "hold short". Well since I was going to stop at the holding point anyway I am always left wondering whether he means something else!! I've always just taxied up to the cleared holding point and waited, which has never got me into any trouble, but I have often wondered what the point of the instruction was, and whether I was missing something crucial!