Customising Plone 3 sharing tab

Question

Where do the titles "Can add", "Can edit", "Can view" and "Can review" come from in the plone 3 sharing tag?

What is the difference between "Can view" and "Can review"?

Answer 1

"Can view" refers to the View permission which essentially controls who can view a given piece of content.

"Can review" refers to a Reviewer role which states who will be able "Review" content in the context of the publishing workflow.

These local roles are defined in plone/app/workflow/localroles.py

Answer 2

For what it's worth, sharing tab roles in Plone 4 will be much easier to customize using GenericSetup. A custom sharing.xml step will look something like:

Answer 3

How about "Can add" and "Can edit"? What do they refer to?