diff --git a/README.md b/README.md
index dd74e14..7c02372 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,10 @@ instance is installed by ansible, the role is available here:
 
 ## Using
 
+See [using.en.md](using.en.md) or [using.fr.md](using.fr.md).
+
+## FAQ
+
 ### Where's the homepage?
 
 This pastebin has no homepage: its homepage is a paste like any
diff --git a/using.en.md b/using.en.md
new file mode 100644
index 0000000..700348c
--- /dev/null
+++ b/using.en.md
@@ -0,0 +1,231 @@
+# Paf'Py
+
+## TL;DR
+
+Use this `bash` function:
+
+```bash
+paf()
+{
+    curl https://p.afpy.org/ "${@/*/-F&=@&}"
+}
+```
+
+it allows to send a file:
+
+```bash
+$ paf manage.py
+- https://p.afpy.org/TaPa/manage.py
+```
+
+or many:
+
+```bash
+$ paf *.py
+- https://p.afpy.org/d6Xd/admin.py
+- https://p.afpy.org/d6Xd/context_processors.py
+- https://p.afpy.org/d6Xd/__init__.py
+- https://p.afpy.org/d6Xd/models.py
+- https://p.afpy.org/d6Xd/urls.py
+- https://p.afpy.org/d6Xd/utils.py
+- https://p.afpy.org/d6Xd/views.py
+```
+
+A more complicated version is provided below.
+
+
+## The projet
+
+Pasteque is a FOSS project implemented by Alexandre Henriet around
+2013 under the MIT license, around 2018 Julien Palard took over for
+https://wyz.fr and finally around 2023 the AFPy took over for
+https://p.afpy.org.
+
+Source code is here: https://git.afpy.org/AFPy/pasteque
+
+
+## Using with `curl`
+
+All examples uses `curl`, feel free to adapt:
+
+Using `multipart/form-data` HTTP requests it is possible to send a file:
+
+```bash
+$ curl https://p.afpy.org/ -Fmanage.py=@manage.py
+- https://p.afpy.org/TaPa/manage.py
+```
+
+Or multiples files:
+
+```bash
+$ curl https://p.afpy.org/ -Fmanage.py=@manage.py -Frequirements.txt=@requirements.txt
+- https://p.afpy.org/Nz2o/manage.py
+- https://p.afpy.org/Nz2o/requirements.txt
+```
+
+The extension is used to determine syntax coloration to be used for each file.
+
+File without extension, or ending with `.md` are interepreted as Markdown.
+
+Files are always given back raw outside of a browser, typically via
+`curl` or `wget`.
+
+
+### Sending in a request body
+
+It is possible to send a single file as a POST body:
+
+```bash
+$ cal | curl -XPOST --data-binary @- https://p.afpy.org/
+- https://p.afpy.org/mo8X
+```
+
+Without a name, the file has no extension, and will be rendered as
+Markdown, it may not be what you want.
+
+In this case it is possible to override the syntax coloration using the `Content-Type` header:
+
+```bash
+$ cal | curl -XPOST -H "Content-Type: text/plain" --data-binary @- https://p.afpy.org/
+- https://p.afpy.org/i3Y2/request.txt
+```
+
+### Choosing the URL
+
+It is possible to use a `PUT` instead of a `POST` to choose the paste URL:
+
+```bash
+$ cal | curl -XPUT --data-binary @- https://p.afpy.org/cal
+- https://p.afpy.org/cal
+```
+
+```bash
+$ curl -XPUT --data-binary @manage.py https://p.afpy.org/manage.py
+- https://p.afpy.org/manage.py
+```
+
+
+### Overwriting (updating) pasts
+
+When sending a paste, you can assign it a secret using the `Authorization` header:
+
+```bash
+$ date | curl -XPUT --data-binary @- -H "Authorization: Secret supersecret" https://p.afpy.org/date
+- https://p.afpy.org/date
+```
+
+This secret can now be used to update the same file:
+
+```bash
+$ date | curl -XPUT --data-binary @- -H "Authorization: Secret supersecret" https://p.afpy.org/date
+- https://p.afpy.org/date
+$ curl https://p.afpy.org/date
+Tue Apr 25 06:22:45 PM CEST 2023
+$ date | curl -XPUT --data-binary @- -H "Authorization: Secret supersecret" https://p.afpy.org/date
+- https://p.afpy.org/date
+$ curl https://p.afpy.org/date
+Tue Apr 25 06:23:44 PM CEST 2023
+```
+
+The home page and the `robots.txt` file of https://p.afpy.org are handled using this method.
+
+
+### Listing own pasts
+
+All pastes sharing the same secret can be listed using the `/::/list/` URL:
+
+```bash
+$ curl https://p.afpy.org/::/list/ -H "Authorization: Secret supersecret"
+| filename   |   size | URL                 | paste_time                | access_time               |   viewcount |
+|------------|--------|---------------------|---------------------------|---------------------------|-------------|
+|            |   5168 | https://p.afpy.org/ | 2023-04-25T16:03:59+00:00 | 2023-04-25T16:26:59+00:00 |           2 |
+```
+
+
+## Advanced usage
+
+With this function (in which the secret have to be changed, I
+ recommend you to use [pass](https://www.passwordstore.org/) but feel
+ free to hardcode the password):
+
+```bash
+paf()
+{
+    local SECRET="$(pass paf)"
+    local AUTH="-HAuthorization: Secret $SECRET"
+    local INSTANCE="https://p.afpy.org/"
+
+    if [[ $1 == "--list" ]]
+    then
+        curl "$AUTH" $INSTANCE::/list/
+        return
+    fi
+
+    if [[ $# == 0 ]]
+    then
+        curl "$AUTH" "$INSTANCE" --data-binary @-
+    else
+        curl "$AUTH" "$INSTANCE" "${@/*/-F&=@&}"
+    fi
+}
+
+code-block()
+{
+    printf '```%s\n' "$1"
+    cat
+    printf '```\n'
+}
+```
+
+It is possible to:
+
+- send one or many files,
+- send from `stdin`,
+- list own files.
+
+The `code-block` function is helpfull to transform non-markdown to a
+Markdown `code-block` while piping, like:
+
+```bash
+$ cal | code-block | paf
+- https://p.afpy.org/WrmY
+```
+
+Without the `code-block` we'll get: https://p.afpy.org/aAkF ☹
+
+If you want to share a complete folder, just paste the list back:
+
+```
+$ paf *.py | paf
+- https://p.afpy.org/nnLR
+```
+
+Which gives:
+
+```
+$ curl https://p.afpy.org/nnLR
+- https://p.afpy.org/fAqR/admin.py
+- https://p.afpy.org/fAqR/context_processors.py
+- https://p.afpy.org/fAqR/__init__.py
+- https://p.afpy.org/fAqR/models.py
+- https://p.afpy.org/fAqR/urls.py
+- https://p.afpy.org/fAqR/utils.py
+- https://p.afpy.org/fAqR/views.py
+```
+
+And, in a browser, as it's interpreted as Markdown, you can click the links.
+
+
+## To get further
+
+- [End-to-end encryption](https://p.afpy.org/e2e.md).
+- [inline HTML in Markdown and the <summary> tag](https://p.afpy.org/summary.md).
+
+
+## Note to self
+
+To update this (french) page on p.afpy.org I use:
+
+```bash
+$ curl -H "Authorization: Secret $(pass paf)" -XPUT --data-binary @using.fr.md https://p.afpy.org/
+```
diff --git a/using.fr.md b/using.fr.md
index 0fcbf42..89dbb22 100644
--- a/using.fr.md
+++ b/using.fr.md
@@ -69,9 +69,7 @@ $ curl https://p.afpy.org/ -Fmanage.py=@manage.py -Frequirements.txt=@requiremen
 C’est l’extension dans le nom du fichier qui permet de choisir la
 coloration syntaxique pour chaque fichier.
 
-Les fichiers texte sont rendus en `plain/text`, donc sans coloration syntaxique.
-
-Les fichiers `.md` et les fichiers sans extension sont interprétés en
+Les fichiers sans extension et les fichiers `.md` sont interprétés en
 Markdown lors de l’affichage dans un navigateur.
 
 Les fichiers sont toujours rendus tels quels lorsqu’ils sont récupérés
@@ -87,6 +85,8 @@ $ cal | curl -XPOST --data-binary @- https://p.afpy.org/
 - https://p.afpy.org/mo8X
 ```
 
+N’ayant pas d’extension, il est interprété en Markdown, ce n’est pas toujours souhaitable.
+
 Dans ce cas, il est possible de choisir la coloration syntaxique via l’entête `Content-Type` :
 
 ```bash
@@ -131,7 +131,7 @@ $ curl https://p.afpy.org/date
 Tue Apr 25 06:23:44 PM CEST 2023
 ```
 
-La page d’accueil est maintenue de cette manière la.
+La page d’accueil, ainsi que le fichier `robots.txt` sont maintenus de cette manière la.
 
 
 ### Lister ses envois
@@ -148,12 +148,15 @@ $ curl https://p.afpy.org/::/list/ -H "Authorization: Secret supersecret"
 
 ## Utilisation avancée
 
-Avec cette fonction (dont le secret doit être personalisé) :
+Avec cette fonction (dont le secret doit être personalisé, je vous
+conseille d’utiliser [pass](https://www.passwordstore.org/) pour ça,
+mais libre à vous d’écrire le mot de passe en clair dans votre
+`~/.bashrc`) :
 
 ```bash
 paf()
 {
-    local SECRET="supersecret"
+    local SECRET="$(pass paf)"
     local AUTH="-HAuthorization: Secret $SECRET"
     local INSTANCE="https://p.afpy.org/"
 
@@ -170,6 +173,13 @@ paf()
         curl "$AUTH" "$INSTANCE" "${@/*/-F&=@&}"
     fi
 }
+
+code-block()
+{
+    printf '```%s\n' "$1"
+    cat
+    printf '```\n'
+}
 ```
 
 Il est possible :
@@ -178,18 +188,23 @@ Il est possible :
 - d’envoyer `stdin`,
 - de lister ses envois.
 
-Exemple d’envoi via `stdin` :
+La fonction `code-block` sert à transformer, dans un pipe, un flux de
+texte en block de code Markdown, c’est typiquement utile lorsqu’on
+envoie quelque chose qui n’est vraiment pas du Markdown via `stdin`,
+comme :
 
 ```bash
-$ cal | paf
-- https://p.afpy.org/aAkF
+$ cal | code-block | paf
+- https://p.afpy.org/WrmY
 ```
 
+Sans quoi on obtiendrait : https://p.afpy.org/aAkF ☹
+
 Si vous voulez partager un dossier complet, vous pouvez simplement
 envoyer la liste des URL qui vous est renvoyée :
 
 ```
-$ paf *.py|paf
+$ paf *.py | paf
 - https://p.afpy.org/nnLR
 ```
 
@@ -206,4 +221,19 @@ $ curl https://p.afpy.org/nnLR
 - https://p.afpy.org/fAqR/views.py
 ```
 
-Et qui est rendu avec des liens cliquables en HTML !
+Et dans un navigateur, c’est rendu via Markdown, les liens sont donc cliquables.
+
+
+## Pour aller plus loin
+
+- [Chiffrement de bout en bout](https://p.afpy.org/e2e.md).
+- [HTML inline dans du Markdown, la balise <summary>](https://p.afpy.org/summary.md).
+
+
+## Note à moi-même
+
+Pour mettre à jour cette page, j’utilise :
+
+```bash
+$ curl -H "Authorization: Secret $(pass paf)" -XPUT --data-binary @using.fr.md https://p.afpy.org/
+```