code/modules/security_levels/security_level_datums.dm 
| /datum/security_level | Security levels |
|---|---|
| /datum/security_level/green | MARK: GREEN |
| /datum/security_level/blue | MARK: BLUE |
| /datum/security_level/red | MARK: RED |
| /datum/security_level/gamma | MARK: GAMMA |
| /datum/security_level/epsilon | MARK: EPSILON |
| /datum/security_level/delta | MARK: DELTA |