| [request_definition] | |
| r = sub, sub_level, obj, obj_level, act | |
| [policy_definition] | |
| p = sub, obj, act | |
| [role_definition] | |
| g = _, _ | |
| [policy_effect] | |
| e = some(where (p.eft == allow)) | |
| [matchers] | |
| m = (r.act == "read" && r.sub_level >= r.obj_level) || (r.act == "write" && r.sub_level <= r.obj_level) |