PL_abort_handle
PL_action
PL_arg
PL_atom_value
PL_bktrk
PL_call
PL_context
PL_dispatch_events
PL_fatal_error
PL_float_value
PL_foreign_reinit_function
PL_functor
PL_functor_arity
PL_functor_name
PL_integer_value
PL_is_atom
PL_is_float
PL_is_int
PL_is_string 
PL_is_term
PL_is_var
PL_list_string_value
PL_mark
PL_module_name
PL_new_atom
PL_new_float
PL_new_functor
PL_new_integer
PL_new_module
PL_new_string
PL_new_term
PL_on_halt
PL_query
PL_register_foreign
PL_signal
PL_string_value
PL_strip_module
PL_type
PL_unify
PL_unify_atomic
PL_unify_functor
PL_warning