Missing content

Leftovers from !113 (merged)

• High level FAQ (probably on hifis.net) (#24 (closed))
• how to integrate a service if you don't use unity (and corresponding info for users on how to gain access to these services)
• more info on entitlements (the recent discussions on AARC G002 schema)
• the "perspective" section (future AAI developments)
• possibly more "concepts"
• mailinglists section: is it up to date?
• a place to collect per service info on supported VOs, assurance, etc
• if necessary, clearer and more complete info in the "organisational" section of each guideline.