b: bi contex-sensitive for local environments
c: contex-sensitive for terms
f: context-freee for closures
l: sn contex-sensitive for local environments
r: dx contex-sensitive for local environments
b: bi contex-sensitive for local environments
c: contex-sensitive for terms
f: context-freee for closures
l: sn contex-sensitive for local environments
r: dx contex-sensitive for local environments