[pmwiki-users] interface for making sitewide changes

[adam overton]

hi
is there a recipe in existence yet that creates a user-interface/page  
where an admin can go to, say, add (:blah: blam:) to every page in  
group Blech?

every once in awhile i need to make such a change, and i usually  
write up a script to do it. but i just realized it be rather nice to  
have a page that
1) asks you which pages you want to iterate over via pagelist - and  
then prints them out so you can confirm
2) then asks you for the text, or pattern, you want to add to or  
remove from each of these pages

exist already?
thanks!
adam