The label and the parent label.
Whether the environment is locked.
The bindings in the environment (up to 20 bindings). They are
printed succintly using
pillar::type_sum() (if available,
otherwise uses an internal version of that generic). In addition
fancy bindings (actives and promises) are
indicated as such.
Locked bindings get a
env_print(env = caller_env())
An environment, or object that can be converted to an