什么 htop中的状态是什么意思？

我?在htop输出的S列中看到了。但是该联机帮助页只有以下状态。什么?意思？谢谢。

   STATE (S) 
        The state of the process:
           S for sleeping (idle)
           R for running
           D for disk sleep (uninterruptible)
           Z for zombie (waiting for parent to read its exit status)
           T for traced or suspended (e.g by SIGTSTP)
           W for paging