What does the –filename mtr option really do?

I was looking for a tool to show the continuous loss of ping to several hosts, and I looked at mtr since it already has the screen I was thinking about. I saw you have this option that sounded promising:

  -F FILENAME, --filename FILENAME
          Reads the list of hostnames from the specified file.

Unfortunately, I can't understand what mtr does with this list of host names. It seems that it only picks up the first one on the list and reports on it

How is the "host name list" used by mtr?

public transport: where can I find updated and online information about which facilities are closed at MTR stations in Hong Kong?

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Tickets: What happens if my MTR trip exceeds my Octopus balance + 35 HKD when I try to use my Octopus card while leaving the MTR station?

https://www.octopus.com.hk/en/document/user_guide.pdf (mirror) states:

If the value in your Octopus is positive (HK $ 0.10 or higher) but insufficient to cover the total amount of the transaction, you can still complete the transaction by incurring a negative value of up to HK $ 35 * on a single occasion that will be automatically recovered. When your octopus reloads.

What happens if my MTR trip exceeds my Octopus balance + 35 HKD when I try to use my Octopus card while leaving the MTR station?

public transport: where can I find updated and online information about the early closing time of the MTR in Hong Kong?

There are currently some protests in progress in Hong Kong, which resulted in an earlier closing time for MTR stations (10 pm last week, 11 pm this week). Where can I find updated and online information about the early closing time of the MTR in Hong Kong and what exactly does it mean (if I am traveling in the MTR while arriving at the closing time, what happens?)

None
http://www.mtr.com.hk/en/customer/services/service_hours_search.php?query_type=search&station=5
neither
http://www.mtr.com.hk/en/customer/main/service_status.html contains the information: the early closing time is not mentioned (for example, see the screenshot below):

enter the description of the image here

Is there an MTR tool that works in Windows 10?

Is there an MTR tool that works in Windows 10?

I tried this but it does not seem to work

https://sourceforge.net/projects/winmtr/