[request_definition]
r = sub, obj, dom, act

[policy_definition]
# sub can't change position and must be first
p = sub, obj, dom, act, eft     

[role_definition]
g = _, _, _

[policy_effect]
e = subjectPriority(p.eft) || deny

[matchers]
m = g(r.sub, p.sub, r.dom) && r.dom == p.dom && r.obj == p.obj && r.act == p.act