About editing a file in /feature

I am trying to edit a file in the directory /feature.
After editing and updating, the file still doesn't work on the mud.
It seems need reboot to make the file work.
But I am not the host of the mud, so I can only shutdown the mud.
Can anyone tell me how to make the file work without rebooting the mud?
Thanks!

What kind of file is it? If it's a source file, you need to compile. You should shutdown the MUD while editing files as well, if the MUD has the file open.