diff --git a/src/inc/help.php b/src/inc/help.php
new file mode 100644
index 0000000..3fe7179
--- /dev/null
+++ b/src/inc/help.php
@@ -0,0 +1,52 @@
+<?php
+class help {
+  const PLACE_INCIDENT_FORM = 0;
+  const PLACE_VALIDATION_PAGE = 1;
+  const PLACE_REGISTRY_PAGE = 2;
+  const PLACE_EXPORT_REGISTRY_PAGE = 3;
+
+  public static $places = [0, 1, 2, 3];
+  public static $placesName = [
+    0 => "Formulario de incidencias",
+    1 => "Página de validación",
+    2 => "Página de listado de registros",
+    3 => "Página de exportar registro"
+  ];
+
+  public static function exists($place) {
+    global $con;
+
+    $splace = (int)$place;
+
+    $query = mysqli_query($con, "SELECT 1 FROM help WHERE place = $splace");
+
+    return (mysqli_num_rows($query) > 0);
+  }
+
+  public static function set($place, $url) {
+    global $con;
+
+    if (!in_array($place, self::$places)) return -1;
+    if ($url !== "" && !filter_var($url, FILTER_VALIDATE_URL)) return 1;
+
+    $splace = (int)$place;
+    $surl = db::sanitize($url);
+
+    if (self::exists($place)) return (mysqli_query($con, "UPDATE help SET url = '$surl' WHERE place = $splace LIMIT 1") ? 0 : -1);
+    else return (mysqli_query($con, "INSERT INTO help (place, url) VALUES ('$splace', '$surl')") ? 0 : -1);
+  }
+
+  public static function get($place) {
+    global $con;
+
+    if (!in_array($place, self::$places)) return false;
+    $splace = (int)$place;
+
+    $query = mysqli_query($con, "SELECT url FROM help WHERE place = $splace");
+
+    if (mysqli_num_rows($query) > 0) {
+      $url = mysqli_fetch_assoc($query)["url"];
+      return ($url === "" ? false : $url);
+    } else return false;
+  }
+}