>If the file is opened EXCLUSIVE there is only ONE user who is opened it :-)
Oh, yes, of course. How obvious - and I didn't notice it.
>So you could try:
>...
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)