Information Access Levels

Security clearance levels are given to different types of personnel based on how high up in rank they are. Ranging from Level Eta to Level Alpha. They give access to different areas of facilities and most importantly, information.
Eta
Mostly given to Test Subjects and janitorial staff who are on a need-to-know basis. Gives only necessary information and access relevant to their current information, no more, no less. Only gives access to specified doors and information, Personnel with Eta Level clearance are prohibited advanced knowledge regarding Anomalies, especially SAP-002. Cannot place Information Locks.
Zeta
Given mostly to Junior Staff and new recruits to give them a feel for the Repository. Giving them access to mostly non-lethal, low threat anomalies and information. Cannot place Information Locks and is not permitted SAP-002, though knowledge of it is allowed.
Epsilon
Gives access to all basic information, middle of the road. Gains access to SAP-002 under necessary situations. Can make requests for additional information outside of their Level.
Delta
Mostly given to to researchers and scientists. Gives most access to basic and some advanced knowledge. Can place Information Locks on Level Zeta and lower. Has less restricted access to SAP-002.
Gamma
Gives access to advanced and classified knowledge. Most commonly given to senior researchers and security guards which require access to weapon armories. Also given to ATAs and TFT members, which also require access to SAP-002. Also given to Archivists.
Beta
Gives large amounts of security clearance and Information access. Can override any Information lock placed by Gamma or lower. Gives access to Site Archives and the Incinerator pit. Held only by Site Directors, Head Archivists and Generals.
Alpha
Gives completely unlimited access to all information within the Repository. Only held by the Apocrypha Council.