[Koha] call number sort problem

[Paul A]

At 09:36 AM 7/7/2014 +0200, Fridolin SOMERS wrote:
>Hie,
>
>If you changed the default classification source, it will not affect the 
>actual classification source in items, nor the items.cn_sort.
>
>You may use the script touch_items.pl to edit all items and so recompute 
>the items.cn_sort.

I can't find any documentation on 'touch_items.pl' except a few mentions on 
IRC chat 
<https://www.google.com/search?q=site%3Akoha-community.org&q=touch_items.pl&sa=Search&gws_rd=ssl> 
-- could you please point me in the right direction?

Thanks -- Paul