diff --git a/config.ini b/config.ini
index 50f411c..c4654d6 100644
--- a/config.ini
+++ b/config.ini
@@ -2,12 +2,6 @@
 root_path = "/srv/php/niver"
 ; Prefix in URL, if any
 prefix =
-; From RFC2606: Reserved Top Level DNS Names > 2. TLDs for Testing, & Documentation Examples
-domain_example = "example"
-; From RFC3849: IPv6 Address Prefix Reserved for Documentation
-ipv6_example = "2001:db8::3"
-; From RFC5737: IPv4 Address Blocks Reserved for Documentation
-ipv4_example = "203.0.113.42"
 
 [dns]
 knotc_path = "/usr/sbin/knotc"
diff --git a/fn/auth.php b/fn/auth.php
index f2b6809..40e3f95 100644
--- a/fn/auth.php
+++ b/fn/auth.php
@@ -3,6 +3,9 @@
 define("USERNAME_REGEX", "^[a-z]{4,32}$");
 define("PASSWORD_REGEX", "^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])[a-zA-Z0-9]{8,1024}|.{10,1024}$");
 
+define("PLACEHOLDER_USERNAME", "lain");
+define("PLACEHOLDER_PASSWORD", "••••••••••••••••••••••••");
+
 // Password storage security
 define("ALGO_PASSWORD", PASSWORD_ARGON2ID);
 define("OPTIONS_PASSWORD", array(
diff --git a/fn/dns.php b/fn/dns.php
index 6476942..fe5cf00 100644
--- a/fn/dns.php
+++ b/fn/dns.php
@@ -1,5 +1,9 @@
 <?php
 
+define("PLACEHOLDER_DOMAIN", "example"); // From RFC2606: Reserved Top Level DNS Names > 2. TLDs for Testing, & Documentation Examples
+define("PLACEHOLDER_IPV6", "2001:db8::3"); // From RFC3849: IPv6 Address Prefix Reserved for Documentation
+define("PLACEHOLDER_IPV4", "203.0.113.42"); // From RFC5737: IPv4 Address Blocks Reserved for Documentation
+
 function knotcExec($suffix, $cmd) {
 	$action = checkAction($_POST['action']);
 
diff --git a/public/auth/index.php b/public/auth/index.php
index 8802532..b82a007 100644
--- a/public/auth/index.php
+++ b/public/auth/index.php
@@ -1,17 +1,22 @@
 <?php require "../../common/html.php"; ?>
 
-<?php if (isset($_SESSION['username'])) { ?>
-
-<a class="auth" href="logout">Se déconnecter</a>
-<br>
-<a class="auth" href="password">Changer la clé de passe</a>
-
-<?php } else { ?>
-	Vous devez être authentifié·e pour utiliser Niver
-	<br>
-	<a class="auth" href="register">Créer un compte</a>
-	<br>
-	<a class="auth" href="login">Se connecter</a>
-<?php } ?>
+<dl>
+	<dt><a href="register">Créer un compte</a></dt>
+	<dd>
+		Créer un nouveau compte Niver
+	</dd>
+	<dt><a href="login">Se connecter</a></dt>
+	<dd>
+		Démarrer une nouvelle session avec un compte existant
+	</dd>
+	<dt><a href="logout">Se déconnecter</a></dt>
+	<dd>
+		Terminer la session et effacer ses cookies
+	</dd>
+	<dt><a href="password">Changer la clé de passe</a></dt>
+	<dd>
+		Changer la chaîne de caractères permettant de vous authentifier.
+	</dd>
+</dl>
 
 <?php closeHTML(); ?>
diff --git a/public/auth/login.php b/public/auth/login.php
index 67bb24c..15c9c6f 100644
--- a/public/auth/login.php
+++ b/public/auth/login.php
@@ -4,11 +4,11 @@
 
 <form method="post">
 	<label for="username">Identifiant</label><br>
-	<input required="" minlength="4" maxlength="32" pattern="<?= USERNAME_REGEX ?>" id="username" name="username" type="text" placeholder="lain">
+	<input required="" minlength="4" maxlength="32" pattern="<?= USERNAME_REGEX ?>" id="username" name="username" type="text" placeholder="<?= PLACEHOLDER_USERNAME ?>">
 	<br>
 
 	<label for="password">Clé de passe</label><br>
-	<input required="" autocomplete="current-password" minlength="8" maxlength="1024" pattern="<?= PASSWORD_REGEX ?>" id="password" name="password" type="password" placeholder="************************">
+	<input required="" autocomplete="current-password" minlength="8" maxlength="1024" pattern="<?= PASSWORD_REGEX ?>" id="password" name="password" type="password" placeholder="<?= PLACEHOLDER_PASSWORD ?>">
 	<br>
 
 	<input type="submit">
@@ -16,32 +16,29 @@
 
 <?php
 
-if (isset($_POST['username']) AND isset($_POST['password'])) {
+switchToFormProcess(requireLogin: false);
 
-	checkPasswordFormat($_POST['password']);
+checkPasswordFormat($_POST['password']);
 
-	checkUsernameFormat($_POST['username']);
+checkUsernameFormat($_POST['username']);
 
-	if (userExist($_POST['username']) !== true)
-		userError("Connexion impossible : ce compte n'existe pas.");
+if (userExist($_POST['username']) !== true)
+	userError("Connexion impossible : ce compte n'existe pas.");
 
-	if (checkPassword($_POST['username'], $_POST['password']) !== true)
-		userError("Connexion impossible : clé de passe invalide.");
+if (checkPassword($_POST['username'], $_POST['password']) !== true)
+	userError("Connexion impossible : clé de passe invalide.");
 
-	$_SESSION['username'] = $_POST['username'];
+$_SESSION['username'] = $_POST['username'];
 
-	if (outdatedPasswordHash($_SESSION['username']))
-		changePassword($_SESSION['username'], $_POST['password']);
+if (outdatedPasswordHash($_SESSION['username']))
+	changePassword($_SESSION['username'], $_POST['password']);
 
-	if (isset($_GET['redir'])) {
-		if (preg_match("/^[0-9a-z\/-]+$/", $_GET['redir']) !== 1)
-			userError("Wrong character in <code>redir</code>.");
-		header("Location: " . CONF['common']['prefix'] . "/" . $_GET['redir']);
-	} else {
-		header("Location: " . CONF['common']['prefix'] . "/");
-	}
+if (isset($_GET['redir'])) {
+	if (preg_match("/^[0-9a-z\/-]+$/", $_GET['redir']) !== 1)
+		userError("Wrong character in <code>redir</code>.");
+	header("Location: " . CONF['common']['prefix'] . "/" . $_GET['redir']);
+} else {
+	header("Location: " . CONF['common']['prefix'] . "/");
 }
 
-?>
-
-<?php closeHTML(); ?>
+success("Connecté·e.");
diff --git a/public/auth/logout.php b/public/auth/logout.php
index f666f14..fce9780 100644
--- a/public/auth/logout.php
+++ b/public/auth/logout.php
@@ -1,10 +1,10 @@
 <?php require "../../common/html.php"; ?>
 
 <?php
-session_destroy();
+
+if (session_status() === PHP_SESSION_ACTIVE)
+	session_destroy();
+
 header('Clear-Site-Data: "*"');
 header('Location: ' . CONF['common']['prefix'] . '/');
-exit;
-?>
-
-<?php closeHTML(); ?>
+success("Déconnecté·e.");
diff --git a/public/auth/password.php b/public/auth/password.php
index a55e681..fc15e8f 100644
--- a/public/auth/password.php
+++ b/public/auth/password.php
@@ -1,40 +1,28 @@
 <?php require "../../common/html.php"; ?>
 
 <p>
-	Vous pouvez ici changer le mot de passe permettant d'accéder à votre compte Niver.
+	Vous pouvez ici changer la clé de passe permettant d'accéder à votre compte Niver.
 </p>
 
 <form method="post">
-	<label for="currentPassword">Mot de passe actuel</label><br>
-	<input required="" autocomplete="current-password" minlength="8" maxlength="1024" pattern="<?= PASSWORD_REGEX ?>" id="currentPassword" name="currentPassword" type="password" placeholder="************"><br>
+	<label for="currentPassword">Clé de passe actuelle</label><br>
+	<input required="" autocomplete="current-password" minlength="8" maxlength="1024" pattern="<?= PASSWORD_REGEX ?>" id="currentPassword" name="currentPassword" type="password" placeholder="<?= PLACEHOLDER_PASSWORD ?>"><br>
 
-	<label for="newPassword">Nouveau mot de passe</label><br>
-	<input required="" autocomplete="new-password" minlength="8" maxlength="1024" pattern="<?= PASSWORD_REGEX ?>" id="newPassword" name="newPassword" type="password" placeholder="************"><br>
+	<label for="newPassword">Nouvelle clé de passe</label><br>
+	<input required="" autocomplete="new-password" minlength="8" maxlength="1024" pattern="<?= PASSWORD_REGEX ?>" id="newPassword" name="newPassword" type="password" placeholder="<?= PLACEHOLDER_PASSWORD ?>"><br>
 
 	<input type="submit">
 </form>
 
 <?php
 
-if (isset($_SESSION['username']) AND isset($_POST['newPassword']) AND isset($_POST['currentPassword'])) {
+switchToFormProcess();
 
-	checkPasswordFormat($_POST['newPassword']);
+checkPasswordFormat($_POST['newPassword']);
 
-	if (checkPassword($_SESSION['username'], $_POST['currentPassword']) !== true)
-		userError("Changement impossible : clé de passe invalide.");
+if (checkPassword($_SESSION['username'], $_POST['currentPassword']) !== true)
+	userError("Changement impossible : clé de passe invalide.");
 
-	$newPassword = hashPassword($_POST['newPassword']);
+changePassword($_SESSION['username'], $_POST['newPassword']);
 
-	$db = new PDO('sqlite:' . DB_PATH);
-
-	$stmt = $db->prepare("UPDATE users SET password = :password WHERE username = :username");
-
-	$stmt->bindParam(':username', $_SESSION['username']);
-	$stmt->bindParam(':password', $newPassword);
-
-	$stmt->execute();
-}
-
-?>
-
-<?php closeHTML(); ?>
+success("Clé de passe changée.");
diff --git a/public/auth/register.php b/public/auth/register.php
index 5983189..f0b3e5a 100644
--- a/public/auth/register.php
+++ b/public/auth/register.php
@@ -2,63 +2,13 @@
 
 <p>Déjà un compte ? <a class="auth" href="login">Se connecter</a></p>
 
-<?php
-
-if (isset($_POST['username']) AND isset($_POST['password'])) {
-
-	checkPasswordFormat($_POST['password']);
-
-	checkUsernameFormat($_POST['username']);
-
-	$userExist = userExist($_POST['username']);
-
-	if ($userExist === false) {
-
-		// Setup SFTP directory
-		umask(0002);
-		if (mkdir(CONF['ht']['ht_path'] . "/" . $_POST['username'], 0775) !== true)
-			serverError("Can't create user directory.");
-		exec(CONF['ht']['sudo_path'] . " " . CONF['ht']['chgrp_path'] . " " . CONF['ht']['sftpgo_group'] . " " . CONF['ht']['ht_path'] . "/" . $_POST['username'] . " --no-dereference", $stdout, $code);
-		if ($code !== 0)
-			serverError("Can't change user directory group.");
-
-		$password = hashPassword($_POST['password']);
-
-		$db = new PDO('sqlite:' . DB_PATH);
-
-		$stmt = $db->prepare("INSERT INTO users(username, password, registration_date) VALUES(:username, :password, :registration_date)");
-
-		$time = date("Y-m-d H:i:s");
-
-		$stmt->bindParam(':username', $_POST['username']);
-		$stmt->bindParam(':password', $password);
-		$stmt->bindParam(':registration_date', $time);
-
-		$stmt->execute();
-
-		$_SESSION['username'] = $_POST['username'];
-
-		header('Location: ' . CONF['common']['prefix'] . '/');
-		exit;
-	}
-
-}
-
-?>
-
 <form method="post">
 
 	<details>
 		<summary><label for="username">Identifiant</label></summary>
 		Uniquement composé de lettres minuscules.
 	</details>
-	<input id="username" minlength="4" maxlength="32" pattern="<?= USERNAME_REGEX ?>" required="" name="username" type="text" placeholder="lain"><span></span><br>
-
-<?php
-if (isset($userExist) AND $userExist === true) {
-	echo "<br>Cet identifiant est déjà utilisé. Choisissez-en un autre.";
-}
-?>
+	<input id="username" minlength="4" maxlength="32" pattern="<?= USERNAME_REGEX ?>" required="" name="username" type="text" placeholder="<?= PLACEHOLDER_USERNAME ?>"><br>
 
 	<details>
 		<summary><label for="password">Clé de passe</label></summary>
@@ -66,9 +16,46 @@ if (isset($userExist) AND $userExist === true) {
 		<p>Minimum 8 caractères si elle contient minuscule, majuscule et chiffre, ou minimum 10 caractères sinon.</p>
 	</details>
 
-	<input autocomplete="new-password" id="password" minlength="8" maxlength="1024" pattern="<?= PASSWORD_REGEX ?>" required="" name="password" type="password" placeholder="************"><span title="Le format nest pas valide"></span><br>
+	<input autocomplete="new-password" id="password" minlength="8" maxlength="1024" pattern="<?= PASSWORD_REGEX ?>" required="" name="password" type="password" placeholder="<?= PLACEHOLDER_PASSWORD ?>"><br>
 
 	<input type="submit">
 </form>
 
-<?php closeHTML(); ?>
+<?php
+
+switchToFormProcess(requireLogin: false);
+
+checkPasswordFormat($_POST['password']);
+
+checkUsernameFormat($_POST['username']);
+
+if (userExist($_POST['username']) !== false)
+	userError("Ce nom de compte est déjà utilisé.");
+
+// Setup SFTP directory
+umask(0002);
+if (mkdir(CONF['ht']['ht_path'] . "/" . $_POST['username'], 0775) !== true)
+	serverError("Can't create user directory.");
+exec(CONF['ht']['sudo_path'] . " " . CONF['ht']['chgrp_path'] . " " . CONF['ht']['sftpgo_group'] . " " . CONF['ht']['ht_path'] . "/" . $_POST['username'] . " --no-dereference", $stdout, $code);
+if ($code !== 0)
+	serverError("Can't change user directory group.");
+
+$password = hashPassword($_POST['password']);
+
+$db = new PDO('sqlite:' . DB_PATH);
+
+$stmt = $db->prepare("INSERT INTO users(username, password, registration_date) VALUES(:username, :password, :registration_date)");
+
+$time = date("Y-m-d H:i:s");
+
+$stmt->bindParam(':username', $_POST['username']);
+$stmt->bindParam(':password', $password);
+$stmt->bindParam(':registration_date', $time);
+
+$stmt->execute();
+
+$_SESSION['username'] = $_POST['username'];
+
+header('Location: ' . CONF['common']['prefix'] . '/');
+
+success("Compte créé.");
diff --git a/public/css/form.css b/public/css/form.css
index 40f6837..889170f 100644
--- a/public/css/form.css
+++ b/public/css/form.css
@@ -35,22 +35,6 @@ input[type=password] {
 	width: 7ch;
 }
 
-input:invalid+span::after {
-	content: '✖';
-}
-
-input:valid+span::after {
-	content: ''; /* ✓ */
-}
-
-input+span::after {
-	display: inline-block;
-	width: 20px;
-	font-size: 30px;
-	padding-left: 20px;
-	font-family: monospace;
-}
-
 :disabled {
 	cursor: not-allowed;
 }
diff --git a/public/ht/https-domain.php b/public/ht/https-domain.php
index 4f9efb8..8582465 100644
--- a/public/ht/https-domain.php
+++ b/public/ht/https-domain.php
@@ -9,7 +9,7 @@
 
 <form method="post">
 	<label for="domain">Domaine sur lequel répondre</label><br>
-	<input required="" placeholder="site.<?= CONF['common']['domain_example'] ?>" id="domain" name="domain" type="text"><br>
+	<input required="" placeholder="site.<?= PLACEHOLDER_DOMAIN ?>" id="domain" name="domain" type="text"><br>
 	<label for="dir">Dossier ciblé</label><br>
 	<select required="" name="dir" id="dir">
 		<option value="" disabled="" selected="">---</option>
diff --git a/public/ns/ip.php b/public/ns/ip.php
index 8b097b3..80e5ffc 100644
--- a/public/ns/ip.php
+++ b/public/ns/ip.php
@@ -8,7 +8,7 @@
 <form method="post">
 <?php require "../../form.ns.php"; ?>
 	<label for="ip">Adresse IP</label><br>
-	<input required="" pattern="^[a-f0-9:.]+$" id="ip" name="ip" minlength="7" maxlength="39" size="40" type="text" placeholder="<?= CONF['common']['ipv6_example'] ?> ou <?= CONF['common']['ipv4_example'] ?>"><br>
+	<input required="" pattern="^[a-f0-9:.]+$" id="ip" name="ip" minlength="7" maxlength="39" size="40" type="text" placeholder="<?= PLACEHOLDER_IPV6 ?> ou <?= PLACEHOLDER_IPV4 ?>"><br>
 	<input value="Valider" type="submit">
 </form>
 
diff --git a/public/ns/mx.php b/public/ns/mx.php
index eb0a590..648ed4d 100644
--- a/public/ns/mx.php
+++ b/public/ns/mx.php
@@ -14,7 +14,7 @@
 
 	<label for="host">Hôte</label>
 	<br>
-	<input id="host" placeholder="mail.<?= CONF['common']['domain_example'] ?>." name="host" type="text">
+	<input id="host" placeholder="mail.<?= PLACEHOLDER_DOMAIN ?>." name="host" type="text">
 
 	<br>
 	<input value="Valider" type="submit">
diff --git a/public/ns/ns.php b/public/ns/ns.php
index 0e5776f..450af27 100644
--- a/public/ns/ns.php
+++ b/public/ns/ns.php
@@ -5,7 +5,7 @@
 	<br>
 	<label for="ns">Serveur de nom</label>
 	<br>
-	<input id="ns" placeholder="ns1.<?= CONF['common']['domain_example'] ?>" name="ns" type="text">
+	<input id="ns" placeholder="ns1.<?= PLACEHOLDER_DOMAIN ?>" name="ns" type="text">
 	<br>
 	<input value="Procéder" type="submit">
 </form>
diff --git a/public/ns/srv.php b/public/ns/srv.php
index d414a23..f00a01b 100644
--- a/public/ns/srv.php
+++ b/public/ns/srv.php
@@ -26,7 +26,7 @@
 
 	<label for="target">Cible</label>
 	<br>
-	<input id="target" minlenght="1" maxlength="128" placeholder="service.<?= CONF['common']['domain_example'] ?>." name="target" type="text">
+	<input id="target" minlenght="1" maxlength="128" placeholder="service.<?= PLACEHOLDER_DOMAIN ?>." name="target" type="text">
 
 	<br>
 	<input value="Valider" type="submit">
diff --git a/public/ns/zone.php b/public/ns/zone.php
index 7827fb6..e624cee 100644
--- a/public/ns/zone.php
+++ b/public/ns/zone.php
@@ -3,7 +3,7 @@
 <form method="post">
 	<h2>Ajouter une zone</h2>
 	<label for="domain">Domaine</label><br>
-	<input required="" placeholder="domain.<?= CONF['common']['domain_example'] ?>." id="domain" name="domain" type="text"><br>
+	<input required="" placeholder="domain.<?= PLACEHOLDER_DOMAIN ?>." id="domain" name="domain" type="text"><br>
 	<input value="Ajouter" type="submit">
 </form>
 
diff --git a/public/reg/glue.php b/public/reg/glue.php
index ce12a49..a10cf31 100644
--- a/public/reg/glue.php
+++ b/public/reg/glue.php
@@ -30,7 +30,7 @@ if (isset($_SESSION['username']))
 		</div>
 	</fieldset>
 	<label for="ip">IP</label><br>
-	<input required="" pattern="^[a-f0-9:.]+$" id="ip" name="ip" minlength="7" maxlength="39" size="40" type="text" placeholder="<?= CONF['common']['ipv4_example'] ?> ou <?= CONF['common']['ipv6_example'] ?>">
+	<input required="" pattern="^[a-f0-9:.]+$" id="ip" name="ip" minlength="7" maxlength="39" size="40" type="text" placeholder="<?= PLACEHOLDER_IPV4 ?> ou <?= PLACEHOLDER_IPV6 ?>">
 	<br>
 	<input value="Valider" type="submit">
 </form>
diff --git a/public/reg/ns.php b/public/reg/ns.php
index 4396049..28eb5bb 100644
--- a/public/reg/ns.php
+++ b/public/reg/ns.php
@@ -21,7 +21,7 @@ if (isset($_SESSION['username']))
 	<br>
 	<label for="ns">Serveur de nom</label>
 	<br>
-	<input id="ns" placeholder="ns1.<?= CONF['common']['domain_example'] ?>." name="ns" type="text">
+	<input id="ns" placeholder="ns1.<?= PLACEHOLDER_DOMAIN ?>." name="ns" type="text">
 	<br>
 	<input value="Valider" type="submit">
 </form>