以下命令的含义是什么？为什么nmap的帮助菜单中没有给出它？

示例命令:sudo nmap -sP -n 192.168.0.0-255

示例输出:

Starting Nmap 7.60 ( https://nmap.org ) at 2017-10-14 16:09 +06 
Nmap scan report for 192.168.0.1 
Host is up (0.0035s latency). 
MAC Address: 20:L6:A7:55:3D:44 (D-link Technologies) 
Nmap scan report for 192.168.0.104 
Host is up (0.20s latency). 
MAC Address: 18:97:F8:15:26:D9 (Zen Mobile Communication Technology) 
Nmap scan report for 192.168.0.118 
Host is up. 
Nmap done: 256 IP addresses (3 hosts up) scanned in 6.31 seconds 

-sP 是什么意思以及为什么使用它？

该命令工作正常，但未列出到手册和帮助菜单中。

请详细说明情况。

请您参考如下方法:

来自手册页:

In previous releases of Nmap, -sn was known as -sP..