shell info
输入以下Erlang shell命令时：

proc_lib:spawn(fun() -> io:format("~p~n",[process_info(self())]) end).

Erlang将在图片中显示以下信息。

[{current_function,{erl_eval,do_apply,6}},
 {initial_call,{proc_lib,init_p,3}},
 {status,running},
 {message_queue_len,0},
 {messages,[]},
 {links,[]},
 {dictionary,[{'$ancestors',[<0.32.0>]},
              {'$initial_call',{erl_eval,'-expr/5-fun-3-',0}}]},
 {trap_exit,false},
 {error_handler,error_handler},
 {priority,normal},
 {group_leader,<0.25.0>},
 {total_heap_size,233},
 {heap_size,233},
 {stack_size,27},
 {reductions,72},
 {garbage_collection,[{min_bin_vheap_size,46422},
                      {min_heap_size,233},
                      {fullsweep_after,65535},
                      {minor_gcs,0}]},
 {suspending,[]}]
<0.34.0>

在Erlang shell输出信息中，“$"、6和5-fun-3-（如果你不知道我指的是什么，我已经上传了一张图片来说明）是什么意思？谢谢。