Andrew Nagy tried to explain to me off-list what content in Summon is 
'restricted', but I honestly couldn't understand his explanation, but it 
didn't seem to be as simple as "A list of A&I databases", it for some 
reason had something to do with full text licensing your institution had 
(I know, doesn't make any sense to me either).

So I don't completely what is or is not included in Summon as 
'restricted' content requiring auth to be included in search results. 
Nor do I understand this for any of the other discovery vendors, it's 
all very confusing. We're not a Summon customer (or any 'discovery' 
customer, at this point), so I'm not going to spend a lot of time trying 
to figure it out for Summon specifically, I'm just going to mark it in 
my head as "it's complicated and hard to understand, for all the vendors".

It DOES seem to be true, that at least for some discovery vendors, 
nobody seems to miss the absence of the 'restricted' content, lots of 
existing customers didn't even realize there was such content.

On 10/24/2012 5:41 PM, Godmar Back wrote:
> On Wed, Oct 24, 2012 at 1:54 PM, Mark Mounts <[log in to unmask]>wrote:
>
>> We have Summon at Dartmouth College. Authentication is IP based so with a
>> Dartmouth IP address the user will see all our licensed content.
>>
>> There is also the option to see all the content Summon has beyond what we
>> license by selecting the option "Add results beyond your library's
>> collection"
>>
>>
> That's according to my understanding not what Jonathan is talking about.
>
> You can select "Add results beyond your library's collection" while being
> unauthenticated/off-campus, but this still won't show you the same results.
>
> The results that are never displayed to unauthenticated users are those
> Summon republishes from A&I databases.
>
> "Add results beyond your library's collection" just adds (public) results
> from the holdings of other libraries; it doesn't add A&I results.
>
>   - Godmar
>
>