diff --git a/docs/nordvpn-script.md b/docs/nordvpn-script.md
index aaf8c7c02..118512bf7 100644
--- a/docs/nordvpn-script.md
+++ b/docs/nordvpn-script.md
@@ -1,18 +1,19 @@
 ## NORDVPN API
 
-The update script is based on the  NordVpn API. The API sends back the best recommended config file based on the filters given.
+The update script is based on the NordVPN API. The API sends back the best recommended OpenVPN configuration file based on the filters given.
 
-Available ENV variables in the container to define via the NORDNVPN API the file to use are:
-* NORDVPN_COUNTRY: (values code: https://api.nordvpn.com/v1/servers/countries)
-* NORDVPN_CATEGORY: (values identifier: https://api.nordvpn.com/v1/servers/groups)
-* NORDVPN_PROTOCOL: tcp or udp (values identifier more available at https://api.nordvpn.com/v1/technologies, may need script adaptation)
+Available ENV variables in the container to define via the NordVPN API the file to use are:
+| Variable           | Function                                                                                                                                                            | Example                       |
+| ------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------- |
+| `NORDVPN_COUNTRY`  | Two character country code. See [/servers/countries](https://api.nordvpn.com/v1/servers/countries) for full list.                                                   | `NORDVPN_COUNTRY=US`          |
+| `NORDVPN_CATEGORY` | Server type (P2P, Standard, etc). See [/servers/groups](https://api.nordvpn.com/v1/servers/groups) for full list. Use either `title` or `identifier` from the list. | `NORDVPN_CATEGORY=legacy_p2p` |
+| `NORDVPN_PROTOCOL` | Either `tcp` or `udp`. (values identifier more available at https://api.nordvpn.com/v1/technologies, may need script adaptation)                                    | `NORDVPN_PROTOCOL=tcp`        |
 
-the file is then download using the API to find the best server according to the variables, here an albanian, using tcp:
+The file is then downloaded using the API to find the best server according to the variables, here an albanian, using tcp:
 * selecting server (limit answer to 1): [ANSWER]= https://api.nordvpn.com/v1/servers/recommendations?filters[country_id]=2&filters[servers_technologies][identifier]=openvpn_tcp&filters[servers_group][identifier]=legacy_group_category&limit=1
 * download selected server's config: https://downloads.nordcdn.com/configs/files/ovpn_[NORDVPN_PROTOCOL]/servers/[ANSWER.0.HOSTNAME][] => https://downloads.nordcdn.com/configs/files/ovpn_tcp/servers/al9.nordvpn.com.tcp.ovpn
- 
 
 A possible evolution would be to check server's load to select the most available one.
 * limit numbers of returned server to 10
 * use https://api.nordvpn.com/server/stats to collect cpu's load
-* select the more available server.
\ No newline at end of file
+* select the more available server.