-It is good to use max 50 percent of the system memory for ZFS arc to
-prevent performance shortage of the host. Use your preferred editor to
-change the configuration in /etc/modprobe.d/zfs.conf and insert:
+It is good to use at most 50 percent (which is the default) of the
+system memory for ZFS ARC to prevent performance shortage of the
+host. Use your preferred editor to change the configuration in
+`/etc/modprobe.d/zfs.conf` and insert: