why you don't have the option to backup files and .jar? or all folder ./*?
start.bat
start.sh
server.jar
server.properties
bukkit.yml
spigot.yml
config.yml
bungee.yml

what is
localfs
otherfolders
and excludefolders
?
i can use /%serverdir%/server.properties?

Otherfolders is a list of other folders and files you wish to backup.
You can use absolete paths, or paths relative to the server root folder.

what i want to know is how to specify the relative folder of the server
./server.jar
/server.jar
$serverfolder/server.jar
or pluginfolder or destinationfolder back dir: ../../../server.jar

is {server folder} like in Performs a world backups({server folder}/backups/)?