diff --git a/readme.md b/readme.md
index ba6adcc..106555f 100644
--- a/readme.md
+++ b/readme.md
@@ -41,6 +41,8 @@ Picture it…
 
 ## What
 
+### Features
+
 Handle project workflows in a unified way:
 * whether the network infrastructure is
   * [X] online
@@ -79,9 +81,7 @@ Handle project workflows in a unified way:
     * [X] Noble (24.04)
     * [ ] Jammy (22.04)
 
-## Who
-
-## How
+### Environment variables
 
 | Variable          | Description              | Default                         |
 |:------------------|:-------------------------|:--------------------------------|
@@ -107,9 +107,9 @@ Handle project workflows in a unified way:
 | SPCD_URL_ROCKY    | Rocky repository URL     | https://dl.rockylinux.org       |
 | SPCD_URL_UBUNTU   | Ubuntu repository URL    | https://ubuntu.mirrors.ovh.net  |
 
-## Packages
+### Operating Systems containers
 
-### Latest
+#### Latest
 
 | os | https | updt-ca | python | graphviz | plantuml | shellcheck | shunit | shfmt |
 |:----------------|---|---|------------:|------:|-----------:|------:|------:|-----:|
@@ -121,7 +121,7 @@ Handle project workflows in a unified way:
 | Ubuntu Noble    | ☐ | ☐ |        3.12 | u2.42 | u1.2020.2  | u0.9  | 2.1.8 | u3.8 |
 | Alma / Rocky 9  | ☑ | ☑ | 3.9  → 3.12 |  2.44 | e1.2024.6  | e0.8  |   git |      |
 
-### Previous
+#### Previous
 
 | os | https | updt-ca | python | graphviz | plantuml | shellcheck | shunit | shfmt |
 |:----------------|---|---|------------:|------:|-----------:|------:|------:|-----:|
@@ -130,14 +130,24 @@ Handle project workflows in a unified way:
 | OpenSUSE 15.5   | ☐ | ☑ | 3.6  → 3.11 |  2.48 |  1.2020.9  |  0.8  | 2.1.6 |  3.5 |
 | Alma / Rocky 8  | ☑ | ☑ | 3.6  → 3.12 |  2.40 | e1.2024.6  | e0.6  |   git |      |
 
-### Older Python
+#### Older Python
 
 | os | https | updt-ca | python | graphviz | plantuml | shellcheck | shunit | shfmt |
 |:----------------|---|---|------------:|------:|-----------:|------:|------:|-----:|
 | Ubuntu Jammy    | ☐ | ☐ |        3.10 | u2.42 | u1.2020.2  | u0.8  | 2.1.6 | u3.4 |
 | Debian Bullseye | ☐ | ☐ |        3.9  |  2.42 |  1.2020.2  |  0.7  | 2.1.6 |      |
 
-## Tasks
+## Who
+
+…
+
+## Where
+
+…
+
+## When
+
+### First
 
 * try git repo url variable first for shunit