Notifications NagiosXI：通知选项是什么；s"；什么意思？

我似乎找不到关于通知选项类型“s”的文档。表单的上下文帮助列出了除s选项之外的所有内容。有人知道这是什么意思吗？或者你能给我指一下相关的文件吗

The Nagios XI Contact Management form shows these notification options:

Host Notification options:  d   u  r   f   s   n 
Service Notification options:  w   u   c   f   s   r   n

主机通知选项帮助弹出窗口对选项的描述如下--请注意，缺少s：

d = notify on DOWN host states,
u = notify on UNREACHABLE host states,
r = notify on host recoveries (UP states), and
f = notify when the host starts and stops flapping.
If you specify n (none) as an option, the contact will not receive any type of host notifications.

w = notify on WARNING service states,
u = notify on UNKNOWN service states,
c = notify on CRITICAL service states,
r = notify on service recoveries (OK states), and
f = notify when the service starts and stops flapping.
If you specify n (none) as an option, the contact will not receive any type of host notifications.

类似地，Service notification help（服务通知帮助）弹出窗口对选项的描述如下——请再次注意，缺少s：

d = notify on DOWN host states,
u = notify on UNREACHABLE host states,
r = notify on host recoveries (UP states), and
f = notify when the host starts and stops flapping.
If you specify n (none) as an option, the contact will not receive any type of host notifications.

w = notify on WARNING service states,
u = notify on UNKNOWN service states,
c = notify on CRITICAL service states,
r = notify on service recoveries (OK states), and
f = notify when the service starts and stops flapping.
If you specify n (none) as an option, the contact will not receive any type of host notifications.

---

我在Nagios支持论坛上发布了这个问题，并得到了他们的回复：

s = send notifications when scheduled downtime starts and ends.

http://nagios.sourceforge.net/docs/3_0/objectdefinitions.html

We'll need to get that updated in the Nagios XI documentation, as
it appears missing, good find.

他们提供的链接具有通知选项定义：

notification_options:   

This directive is used to determine when notifications for the host should 
be sent out. Valid options are a combination of one or more of the following: 

d = send notifications on a DOWN state, 
u = send notifications on an UNREACHABLE state, 
r = send notifications on recoveries (OK state), 
f = send notifications when the host starts and stops flapping, and 
s = send notifications when scheduled downtime starts and ends. 

If you specify n (none) as an option, no host notifications will be sent out. 
If you do not specify any notification options, Nagios will assume that you 
want notifications to be sent out for all possible states. 

Example: 

If you specify d,r in this field, notifications will only be sent out when 
the host goes DOWN and when it recovers from a DOWN state.