> The site I am mirroring grows by one (and only one) new 
top 
> level webpage per day and is an archive going back seven 
> years.  Having captured the older pages, I now only wish 
to 
> concentrate on the newest entries, that which have 
appeared 
> only in the last few days.  
> Any of the webpages dated more than a week old are no 
> longer of concern.  They do not change, except for links 
> that may have expired.  I have set the 'Build > Do not 
> purge old files' option, so any expiring links are 
> irrelevant.
> How can I limit the site update to the most recent top 
> level additions?  

Err, you can't, because as long as you don't check a page, 
you can not know if this page has been updated or not.. 
this is a common limit on HTTP ; because unlike filesystems 
where the timestamp of a directory is changing when a file 
has been modified inside it, you don't have any similar 
system using http protocol.