diff --git a/doc.md b/doc.md
index 1152a79..191789a 100644
--- a/doc.md
+++ b/doc.md
@@ -4,22 +4,29 @@ include_toc: true
---
# Variables
-## env_proxy
+## HTTP(s) proxy server overview and configuration (env_proxy)
+
+A proxy server acts as an intermediary gateway between a client and another
+HTTP(s) server, such as the Internet.
+
+It makes service requests on behalf of a local client and allows the client
+to make network connections to network services outside its own network.
+
| Parameter | Comment |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| **host**
`mandatory`
**Type:** [`string`](https://forge.cloud.silique.fr/stove/rougail/src/branch/main/doc/variable/README.md#le-type-de-la-variable) | |
+| **host**
`mandatory`
**Type:** [`domainname`](https://forge.cloud.silique.fr/stove/rougail/src/branch/main/doc/variable/README.md#le-type-de-la-variable) | The proxy server’s address.
Specifies the hostname of proxy server to enable proxy server access to all of your HTTP(s) requests. .
**Example:** proxy.silique.fr |
# Example with mandatories variables
```
env_proxy:
- host: xxx
+ host: proxy.silique.fr
```
# Example with all variables
```
env_proxy:
- host: xxx
+ host: proxy.silique.fr
```