diff --git a/README.md b/README.md
index e0632f9..74b8ad7 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,9 @@
 - [Summary](https://forge.cloud.silique.fr/stove/rougail-tutorials/src/branch/1.1/README.md)
-- [[tutorial 028] A conditional disabled family with a variable](https://forge.cloud.silique.fr/stove/rougail-tutorials/src/commit/v1.1_028/README.md) ([diff](https://forge.cloud.silique.fr/stove/rougail-tutorials/compare/v1.1_028~1..v1.1_028))
+- [[tutorial 029] Type variable is optional](https://forge.cloud.silique.fr/stove/rougail-tutorials/src/commit/v1.1_029/README.md) ([diff](https://forge.cloud.silique.fr/stove/rougail-tutorials/compare/v1.1_029~1..v1.1_029))
 
-# [tutorial 029] Type variable is optional
+# [tutorial 030] A variable with type "boolean"
 
-[View the diff](https://forge.cloud.silique.fr/stove/rougail-tutorials/compare/v1.1_029~1..v1.1_029)
+[View the diff](https://forge.cloud.silique.fr/stove/rougail-tutorials/compare/v1.1_030~1..v1.1_030)
 
 
 ## Screenshot
@@ -56,6 +56,19 @@ manual:
       type: port
       default: 8080
 
+```
+### firefox/20-manual.yml
+
+
+```yml
+---
+manual:
+
+  use_for_https:
+    description: Also use this proxy for HTTPS
+    type: boolean
+    default: true
+
 ```
 ### Generated documentation
 
@@ -64,9 +77,9 @@ foo@bar:~$ rougail -v 1.1 -m firefox/ -o doc -do github
 ```
 ### Variables
 
-| Variable                                                                                        | Description                                                                                     |
-|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| **proxy_mode**<br/>[`choice`](https://rougail.readthedocs.io/en/latest/variable.html#variables-types) `mandatory`                                                                                                                                                                                                                                                                                                                                                                                                                        | Configure Proxy Access to the Internet.<br/>**Choices**: <br/>- No proxy ← (default)<br/>- Auto-detect proxy settings for this network<br/>- Use system proxy settings<br/>- Manual proxy configuration<br/>- Automatic proxy configuration URL                                                                                                                                                                                                                                                                           |
+| Variable&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;   | Description&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;   |
+|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| **proxy_mode**<br/>[`choice`](https://rougail.readthedocs.io/en/latest/variable.html#variables-types) `mandatory`                                                                                                                                                                                                                                                                                                                                                                                                                                          | Configure Proxy Access to the Internet.<br/>**Choices**: <br/>- No proxy ← (default)<br/>- Auto-detect proxy settings for this network<br/>- Use system proxy settings<br/>- Manual proxy configuration<br/>- Automatic proxy configuration URL                                                                                                                                                                                                                                                                                             |
 
 #### Manual proxy configuration
 
@@ -76,12 +89,140 @@ _`disabled`_
 
 ##### HTTP Proxy
 
-| Variable&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;   | Description&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;   |
-|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| **manual.http_proxy.address**<br/>[`domainname`](https://rougail.readthedocs.io/en/latest/variable.html#variables-types) `mandatory`                                                                                                                                                                                                                                                                                                                                                                                                     | HTTP address.<br/>**Validator**: the domain name can be an IP                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
-| **manual.http_proxy.port**<br/>[`port`](https://rougail.readthedocs.io/en/latest/variable.html#variables-types) `mandatory`                                                                                                                                                                                                                                                                                                                                                                                                              | HTTP Port.<br/>**Default**: 8080                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
+| Variable&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;   | Description&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;   |
+|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| **manual.http_proxy.address**<br/>[`domainname`](https://rougail.readthedocs.io/en/latest/variable.html#variables-types) `mandatory`                                                                                                                                                                                                                                                                                                                                                                                                                       | HTTP address.<br/>**Validator**: the domain name can be an IP                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
+| **manual.http_proxy.port**<br/>[`port`](https://rougail.readthedocs.io/en/latest/variable.html#variables-types) `mandatory`                                                                                                                                                                                                                                                                                                                                                                                                                                | HTTP Port.<br/>**Default**: 8080                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
+
+| Variable&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;   | Description&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;   |
+|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| **manual.use_for_https**<br/>[`boolean`](https://rougail.readthedocs.io/en/latest/variable.html#variables-types) `mandatory`                                                                                                                                                                                                                                                                                                                                                                                                                               | Also use this proxy for HTTPS.<br/>**Default**: True                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
 
 
+## User data
+
+### Example 1
+
+#### config/01/config.yaml
 
 
-- [[tutorial 030] A variable with type "boolean"](https://forge.cloud.silique.fr/stove/rougail-tutorials/src/commit/v1.1_030/README.md) ([diff](https://forge.cloud.silique.fr/stove/rougail-tutorials/compare/v1.1_030~1..v1.1_030))
+```yml
+---
+
+```
+#### Output
+
+```console
+foo@bar:~$ rougail -v 1.1 -m firefox/ -u file -ff config/01/config.yaml
+```
+<pre>╭────────────────────────── Caption ──────────────────────────╮
+│ Variable                           <span style="color: #ffd700">Default value</span>            │
+│ <span style="color: #5c5cff">Undocumented variable</span>              Modified value           │
+│ <span style="color: #ff0000">Undocumented but modified variable</span> (<span style="color: #00aa00">Original default value</span>) │
+│ <span style="color: #ffaf00">Unmodifiable variable</span>                                       │
+╰─────────────────────────────────────────────────────────────╯
+Variables:
+<span style="color: #5c5cff">┗━━ </span>📓 proxy_mode: <span style="color: #ffd700">No proxy</span>
+</pre>
+### Example 2
+
+#### config/02/config.yaml
+
+
+```yml
+---
+proxy_mode: No proxy
+
+```
+#### Output
+
+```console
+foo@bar:~$ rougail -v 1.1 -m firefox/ -u file -ff config/02/config.yaml
+```
+<pre>╭────────────────────────── Caption ──────────────────────────╮
+│ Variable                           <span style="color: #ffd700">Default value</span>            │
+│ <span style="color: #5c5cff">Undocumented variable</span>              Modified value           │
+│ <span style="color: #ff0000">Undocumented but modified variable</span> (<span style="color: #00aa00">Original default value</span>) │
+│ <span style="color: #ffaf00">Unmodifiable variable</span>                                       │
+╰─────────────────────────────────────────────────────────────╯
+Variables:
+<span style="color: #5c5cff">┗━━ </span>📓 proxy_mode: No proxy (<span style="color: #00aa00">No proxy</span>)
+</pre>
+### Example 3
+
+#### config/03/config.yaml
+
+
+```yml
+---
+proxy_mode: Manual proxy configuration
+
+```
+#### Output
+
+```console
+foo@bar:~$ rougail -v 1.1 -m firefox/ -u file -ff config/03/config.yaml
+```
+<pre>🛑 ERRORS
+<span style="color: #ff0000">┣━━ </span>The following variables are mandatory but have no value:
+<span style="color: #ff0000">┗━━ </span>  - manual.http_proxy.address (HTTP address)
+</pre>
+### Example 4
+
+#### config/04/config.yaml
+
+
+```yml
+---
+proxy_mode: foo
+
+```
+#### Output
+
+```console
+foo@bar:~$ rougail -v 1.1 -m firefox/ -u file -ff config/04/config.yaml
+```
+<pre>🛑 ERRORS
+<span style="color: #ff0000">┗━━ </span>"foo" is an invalid choice for "proxy_mode (Configure Proxy Access to the Internet)", only 
+<span style="color: #ff0000">    </span>"Auto-detect proxy settings for this network", "Automatic proxy configuration URL", "Manual proxy 
+<span style="color: #ff0000">    </span>configuration", "No proxy" and "Use system proxy settings" are allowed
+╭────────────────────────── Caption ──────────────────────────╮
+│ Variable                           <span style="color: #ffd700">Default value</span>            │
+│ <span style="color: #5c5cff">Undocumented variable</span>              Modified value           │
+│ <span style="color: #ff0000">Undocumented but modified variable</span> (<span style="color: #00aa00">Original default value</span>) │
+│ <span style="color: #ffaf00">Unmodifiable variable</span>                                       │
+╰─────────────────────────────────────────────────────────────╯
+Variables:
+<span style="color: #5c5cff">┗━━ </span>📓 proxy_mode: <span style="color: #ffd700">No proxy</span>
+</pre>
+### Example 5
+
+#### config/05/config.yaml
+
+
+```yml
+---
+proxy_mode: 1
+
+```
+#### Output
+
+```console
+foo@bar:~$ rougail -v 1.1 -m firefox/ -u file -ff config/05/config.yaml
+```
+<pre>🛑 ERRORS
+<span style="color: #ff0000">┗━━ </span>"1" is an invalid choice for "proxy_mode (Configure Proxy Access to the Internet)", only "Auto-detect
+<span style="color: #ff0000">    </span>proxy settings for this network", "Automatic proxy configuration URL", "Manual proxy configuration", 
+<span style="color: #ff0000">    </span>"No proxy" and "Use system proxy settings" are allowed
+╭────────────────────────── Caption ──────────────────────────╮
+│ Variable                           <span style="color: #ffd700">Default value</span>            │
+│ <span style="color: #5c5cff">Undocumented variable</span>              Modified value           │
+│ <span style="color: #ff0000">Undocumented but modified variable</span> (<span style="color: #00aa00">Original default value</span>) │
+│ <span style="color: #ffaf00">Unmodifiable variable</span>                                       │
+╰─────────────────────────────────────────────────────────────╯
+Variables:
+<span style="color: #5c5cff">┗━━ </span>📓 proxy_mode: <span style="color: #ffd700">No proxy</span>
+</pre>
+
+
+- [[tutorial 031] Bases type is optional if default value](https://forge.cloud.silique.fr/stove/rougail-tutorials/src/commit/v1.1_031/README.md) ([diff](https://forge.cloud.silique.fr/stove/rougail-tutorials/compare/v1.1_031~1..v1.1_031))
diff --git a/config/01/config.yaml b/config/01/config.yaml
new file mode 100644
index 0000000..ed97d53
--- /dev/null
+++ b/config/01/config.yaml
@@ -0,0 +1 @@
+---
diff --git a/config/01/output_ro.html b/config/01/output_ro.html
new file mode 100644
index 0000000..cdecbe8
--- /dev/null
+++ b/config/01/output_ro.html
@@ -0,0 +1,9 @@
+<pre>╭────────────────────────── Caption ──────────────────────────╮
+│ Variable                           <span style="color: #ffd700">Default value</span>            │
+│ <span style="color: #5c5cff">Undocumented variable</span>              Modified value           │
+│ <span style="color: #ff0000">Undocumented but modified variable</span> (<span style="color: #00aa00">Original default value</span>) │
+│ <span style="color: #ffaf00">Unmodifiable variable</span>                                       │
+╰─────────────────────────────────────────────────────────────╯
+Variables:
+<span style="color: #5c5cff">┗━━ </span>📓 proxy_mode: <span style="color: #ffd700">No proxy</span>
+</pre>
diff --git a/config/02/config.yaml b/config/02/config.yaml
new file mode 100644
index 0000000..d914488
--- /dev/null
+++ b/config/02/config.yaml
@@ -0,0 +1,2 @@
+---
+proxy_mode: No proxy
diff --git a/config/02/output_ro.html b/config/02/output_ro.html
new file mode 100644
index 0000000..38b2d86
--- /dev/null
+++ b/config/02/output_ro.html
@@ -0,0 +1,9 @@
+<pre>╭────────────────────────── Caption ──────────────────────────╮
+│ Variable                           <span style="color: #ffd700">Default value</span>            │
+│ <span style="color: #5c5cff">Undocumented variable</span>              Modified value           │
+│ <span style="color: #ff0000">Undocumented but modified variable</span> (<span style="color: #00aa00">Original default value</span>) │
+│ <span style="color: #ffaf00">Unmodifiable variable</span>                                       │
+╰─────────────────────────────────────────────────────────────╯
+Variables:
+<span style="color: #5c5cff">┗━━ </span>📓 proxy_mode: No proxy (<span style="color: #00aa00">No proxy</span>)
+</pre>
diff --git a/config/03/config.yaml b/config/03/config.yaml
new file mode 100644
index 0000000..74edb22
--- /dev/null
+++ b/config/03/config.yaml
@@ -0,0 +1,2 @@
+---
+proxy_mode: Manual proxy configuration
diff --git a/config/03/output_ro.html b/config/03/output_ro.html
new file mode 100644
index 0000000..28450ac
--- /dev/null
+++ b/config/03/output_ro.html
@@ -0,0 +1,4 @@
+<pre>🛑 ERRORS
+<span style="color: #ff0000">┣━━ </span>The following variables are mandatory but have no value:
+<span style="color: #ff0000">┗━━ </span>  - manual.http_proxy.address (HTTP address)
+</pre>
diff --git a/config/04/config.yaml b/config/04/config.yaml
new file mode 100644
index 0000000..e3fa25d
--- /dev/null
+++ b/config/04/config.yaml
@@ -0,0 +1,2 @@
+---
+proxy_mode: foo
diff --git a/config/04/output_ro.html b/config/04/output_ro.html
new file mode 100644
index 0000000..5fe2e0d
--- /dev/null
+++ b/config/04/output_ro.html
@@ -0,0 +1,13 @@
+<pre>🛑 ERRORS
+<span style="color: #ff0000">┗━━ </span>"foo" is an invalid choice for "proxy_mode (Configure Proxy Access to the Internet)", only 
+<span style="color: #ff0000">    </span>"Auto-detect proxy settings for this network", "Automatic proxy configuration URL", "Manual proxy 
+<span style="color: #ff0000">    </span>configuration", "No proxy" and "Use system proxy settings" are allowed
+╭────────────────────────── Caption ──────────────────────────╮
+│ Variable                           <span style="color: #ffd700">Default value</span>            │
+│ <span style="color: #5c5cff">Undocumented variable</span>              Modified value           │
+│ <span style="color: #ff0000">Undocumented but modified variable</span> (<span style="color: #00aa00">Original default value</span>) │
+│ <span style="color: #ffaf00">Unmodifiable variable</span>                                       │
+╰─────────────────────────────────────────────────────────────╯
+Variables:
+<span style="color: #5c5cff">┗━━ </span>📓 proxy_mode: <span style="color: #ffd700">No proxy</span>
+</pre>
diff --git a/config/05/config.yaml b/config/05/config.yaml
new file mode 100644
index 0000000..bf6f64c
--- /dev/null
+++ b/config/05/config.yaml
@@ -0,0 +1,2 @@
+---
+proxy_mode: 1
diff --git a/config/05/output_ro.html b/config/05/output_ro.html
new file mode 100644
index 0000000..071b4d5
--- /dev/null
+++ b/config/05/output_ro.html
@@ -0,0 +1,13 @@
+<pre>🛑 ERRORS
+<span style="color: #ff0000">┗━━ </span>"1" is an invalid choice for "proxy_mode (Configure Proxy Access to the Internet)", only "Auto-detect
+<span style="color: #ff0000">    </span>proxy settings for this network", "Automatic proxy configuration URL", "Manual proxy configuration", 
+<span style="color: #ff0000">    </span>"No proxy" and "Use system proxy settings" are allowed
+╭────────────────────────── Caption ──────────────────────────╮
+│ Variable                           <span style="color: #ffd700">Default value</span>            │
+│ <span style="color: #5c5cff">Undocumented variable</span>              Modified value           │
+│ <span style="color: #ff0000">Undocumented but modified variable</span> (<span style="color: #00aa00">Original default value</span>) │
+│ <span style="color: #ffaf00">Unmodifiable variable</span>                                       │
+╰─────────────────────────────────────────────────────────────╯
+Variables:
+<span style="color: #5c5cff">┗━━ </span>📓 proxy_mode: <span style="color: #ffd700">No proxy</span>
+</pre>
diff --git a/firefox.png b/firefox.png
index e40ce96..b7ca7aa 100644
Binary files a/firefox.png and b/firefox.png differ