anchor.diff:  
   === Price lists
   
  -image:https://github.com/killbill/killbill-docs/raw/v3/userguide/assets/img/catalog/catalog_pricelist[width=9600,align="center"]
  +image:https://github.com/killbill/killbill-docs/raw/v3/userguide/assets/img/catalog/catalog_pricelist.png[width=550,align="center"]
   
   Price Lists are collections of Plans, usually associated with a promotion or discount package.
   
  
positive.code: 
  This rule uses the Change Context and, like the cancellation rule above, specifies when a plan change should occur.
  
  image:https://github.com/killbill/killbill-docs/raw/v3/userguide/assets/img/catalog/catalog_change_timing.png[width=960,align="center"]
  
  There are three options (two of which are illustrated above):
  
  
negative.code: 
  This rule uses the Phase Context and is used to specify when a cancellation should occur.
  
  image:https://github.com/killbill/killbill-docs/raw/v3/userguide/assets/img/catalog/catalog_cancellation_timing.png[width=550,align="center"]
  
  There are two options (illustrated above):
  
  