[drupal-devel] needed documentation for block module for 4.6

I am upgrading recipe.module now like a good citizen. I find these instructions unlikely: "The only required changes to modules implementing hook_block() is to be careful about what is returned. Do not return anything if $op is not 'list' or 'view'". But those are the only $op values according to http://drupaldocs.org/api/head/function/hook_block. Perhaps we need to document 'configure' and other operations? I have not followed these changes very closely.