nearly Bob ...

(thanks for the patience)
keep in mind: this concept is really hard for me ... also if is explained in italian ...
OK, you said: it runs on whatever page, but what is the real advantage of this? if i can't get anything onto WOL box or onto whatever page that these hack make (you know that these hacks make a statistic or tracking pages) then i still don't understand what is the utility to select 'run on all pages' ...
maybe if i run the code over all the pages i can get the tracking/statistic results faster? or what? i really don't understand ...