diff --git a/Account/PermissionAbstract.php b/Account/PermissionAbstract.php
index b970c2c89..abe242cb1 100755
--- a/Account/PermissionAbstract.php
+++ b/Account/PermissionAbstract.php
@@ -46,10 +46,10 @@ class PermissionAbstract implements \JsonSerializable
     /**
      * App name.
      *
-     * @var null|string
+     * @var null|int
      * @since 1.0.0
      */
-    protected ?string $app = null;
+    protected ?int $app = null;
 
     /**
      * Module id.
@@ -135,7 +135,7 @@ class PermissionAbstract implements \JsonSerializable
      * Constructor.
      *
      * @param null|int    $unit       Unit to check (null if all are acceptable)
-     * @param null|string $app        App to check  (null if all are acceptable)
+     * @param null|int    $app        App to check  (null if all are acceptable)
      * @param null|string $module     Module Module to check  (null if all are acceptable)
      * @param null|string $from       Provided by which module
      * @param null|int    $category   Category (e.g. customer) (null if all are acceptable)
@@ -147,7 +147,7 @@ class PermissionAbstract implements \JsonSerializable
      */
     public function __construct(
         int $unit = null,
-        string $app = null,
+        int $app = null,
         string $module = null,
         string $from = null,
         int $category = null,
@@ -211,11 +211,11 @@ class PermissionAbstract implements \JsonSerializable
     /**
      * Get app name.
      *
-     * @return null|string
+     * @return null|int
      *
      * @since 1.0.0
      */
-    public function getApp() : ?string
+    public function getApp() : ?int
     {
         return $this->app;
     }
@@ -223,13 +223,13 @@ class PermissionAbstract implements \JsonSerializable
     /**
      * Set app name.
      *
-     * @param string $app App name
+     * @param int $app App name
      *
      * @return void
      *
      * @since 1.0.0
      */
-    public function setApp(string $app = null) : void
+    public function setApp(int $app = null) : void
     {
         $this->app = $app;
     }
@@ -467,7 +467,7 @@ class PermissionAbstract implements \JsonSerializable
      *
      * @param int         $permission Permission to check
      * @param null|int    $unit       Unit Unit to check (null if all are acceptable)
-     * @param null|string $app        App App to check  (null if all are acceptable)
+     * @param null|int    $app        App App to check  (null if all are acceptable)
      * @param null|string $module     Module Module to check  (null if all are acceptable)
      * @param null|int    $category   Category (e.g. customer) (null if all are acceptable)
      * @param null|int    $element    (e.g. customer id) (null if all are acceptable)
@@ -480,7 +480,7 @@ class PermissionAbstract implements \JsonSerializable
     public function hasPermission(
         int $permission,
         int $unit = null,
-        string $app = null,
+        int $app = null,
         string $module = null,
         int $category = null,
         int $element = null,
diff --git a/Account/PermissionHandlingTrait.php b/Account/PermissionHandlingTrait.php
index 2d8846802..b445b7859 100755
--- a/Account/PermissionHandlingTrait.php
+++ b/Account/PermissionHandlingTrait.php
@@ -123,7 +123,7 @@ trait PermissionHandlingTrait
      *
      * @param int         $permission Permission to check
      * @param null|int    $unit       Unit Unit to check (null if all are acceptable)
-     * @param null|string $app        App App to check  (null if all are acceptable)
+     * @param null|int $app        App App to check  (null if all are acceptable)
      * @param null|string $module     Module Module to check  (null if all are acceptable)
      * @param null|int    $category   Type (e.g. customer) (null if all are acceptable)
      * @param null|int    $element    (e.g. customer id) (null if all are acceptable)
@@ -136,15 +136,13 @@ trait PermissionHandlingTrait
     public function hasPermission(
         int $permission,
         int $unit = null,
-        string $app = null,
+        int $app = null,
         string $module = null,
         int $category = null,
         int $element = null,
         int $component = null
     ) : bool
     {
-        $app = $app !== null ? \strtolower($app) : $app;
-
         foreach ($this->permissions as $p) {
             if ($p->hasPermission($permission, $unit, $app, $module, $category, $element, $component)) {
                 return true;
diff --git a/Ai/Ocr/BasicOcr.php b/Ai/Ocr/BasicOcr.php
index f98f72a32..632513167 100755
--- a/Ai/Ocr/BasicOcr.php
+++ b/Ai/Ocr/BasicOcr.php
@@ -70,7 +70,7 @@ final class BasicOcr
     }
 
     /**
-     * Reat image from path
+     * Read image from path
      *
      * @param string $path  Image to read
      * @param int    $limit Limit
@@ -93,7 +93,8 @@ final class BasicOcr
         if (($read = \fread($fp, 4)) === false || ($unpack = \unpack('N', $read)) === false) {
             return []; // @codeCoverageIgnore
         }
-        $magicNumber = $unpack[1];
+
+        // $magicNumber = $unpack[1];
 
         if (($read = \fread($fp, 4)) === false || ($unpack = \unpack('N', $read)) === false) {
             return []; // @codeCoverageIgnore
@@ -125,6 +126,7 @@ final class BasicOcr
             ) {
                 return []; // @codeCoverageIgnore
             }
+
             $images[] = \array_values($unpack);
         }
 
@@ -237,6 +239,53 @@ final class BasicOcr
         return $dist;
     }
 
+    public static function imagesToMNIST(array $images, string $out, int $resolution) : void
+    {
+        $out = \fopen($out, 'wb');
+
+        \fwrite($out, \pack('N', 2051));
+        \fwrite($out, \pack('N', 1));
+        \fwrite($out, \pack('N', $resolution));
+        \fwrite($out, \pack('N', $resolution));
+
+        foreach ($images as $in) {
+            $im  = \imagecreatefromstring(\file_get_contents($in));
+            $new = \imagescale($im, $resolution, $resolution);
+
+            // Convert the image to grayscale and normalize the pixel values
+            $mnist = [];
+            for ($i = 0; $i < $resolution; ++$i) {
+                for ($j = 0; $j < $resolution; ++$j) {
+                    $pixel = \imagecolorat($new, $j, $i);
+                    $gray  = \round((0.299 * (($pixel >> 16) & 0xFF) + 0.587 * (($pixel >> 8) & 0xFF) + 0.114 * ($pixel & 0xFF)) / 255, 3);
+
+                    \array_push($mnist, $gray);
+                }
+            }
+
+            for ($i = 0; $i < \count($mnist); $i++) {
+                \fwrite($out, \pack('C', \round($mnist[$i] * 255)));
+            }
+        }
+
+        \fclose($out);
+    }
+
+    public static function labelsToMNIST(array $data, string $out) : void
+    {
+        // Only allows single char labels
+        $out = \fopen($out, 'wb');
+
+        \fwrite($out, \pack('N', 2049));
+        \fwrite($out, \pack('N', 1));
+
+        foreach ($data as $e) {
+            \fwrite($out, \pack('C', $e));
+        }
+
+        \fclose($out);
+    }
+
     /**
      * Categorize an unknown image
      *
@@ -250,7 +299,6 @@ final class BasicOcr
      */
     public function matchImage(string $path, int $comparison = 3, int $limit = 0) : array
     {
-        // @todo: implement image reading if it isn't an mnist file
         $Xtest = $this->readImages($path, $limit);
 
         return $this->kNearest($this->Xtrain, $this->ytrain, $Xtest, $comparison);
diff --git a/Ai/Ocr/Tesseract/TesseractOcr.php b/Ai/Ocr/Tesseract/TesseractOcr.php
index a25a43c46..87a2f1e26 100755
--- a/Ai/Ocr/Tesseract/TesseractOcr.php
+++ b/Ai/Ocr/Tesseract/TesseractOcr.php
@@ -115,8 +115,6 @@ final class TesseractOcr
             return '';
         }
 
-        // @todo: auto flip image if x% of text are garbage words?
-
         \unlink($filepath);
 
         return \trim($parsed);
diff --git a/Algorithm/Graph/DependencyResolver.php b/Algorithm/Graph/DependencyResolver.php
index c9cd1181e..21f570043 100755
--- a/Algorithm/Graph/DependencyResolver.php
+++ b/Algorithm/Graph/DependencyResolver.php
@@ -37,7 +37,7 @@ final class DependencyResolver
     {
         $resolved   = [];
         $unresolved = [];
-        foreach ($graph as $table => $dependency) {
+        foreach ($graph as $table => $_) {
             self::dependencyResolve($table, $graph, $resolved, $unresolved);
         }
 
diff --git a/Api/EUVAT/EUVATBffOnline.php b/Api/EUVAT/EUVATBffOnline.php
index d104b1f4e..638522252 100644
--- a/Api/EUVAT/EUVATBffOnline.php
+++ b/Api/EUVAT/EUVATBffOnline.php
@@ -48,18 +48,18 @@ final class EUVATBffOnline implements EUVATInterface
         $request->setMethod(RequestMethod::GET);
 
         $result = [
-            'status' => -1,
-            'vat'   => 'C',
-            'name'   => '',
-            'city'   => '',
-            'postal' => '',
+            'status'  => -1,
+            'vat'     => 'C',
+            'name'    => '',
+            'city'    => '',
+            'postal'  => '',
             'address' => '',
-            'body' => '',
+            'body'    => '',
         ];
 
         $matches = [];
         try {
-            $body = Rest::request($request)->getBody();
+            $body           = Rest::request($request)->getBody();
             $result['body'] = $body;
 
             \preg_match('/ErrorCode.*?(\d+)/s', $body, $matches);
@@ -93,13 +93,13 @@ final class EUVATBffOnline implements EUVATInterface
     ) : array
     {
         $result = [
-            'status' => -1,
-            'vat'   => 'C',
-            'name'   => 'C',
-            'city'   => 'C',
-            'postal' => 'C',
+            'status'  => -1,
+            'vat'     => 'C',
+            'name'    => 'C',
+            'city'    => 'C',
+            'postal'  => 'C',
             'address' => 'C',
-            'body' => '',
+            'body'    => '',
         ];
 
         if (empty($ownVAT)) {
@@ -112,7 +112,7 @@ final class EUVATBffOnline implements EUVATInterface
         $request->setMethod(RequestMethod::GET);
 
         try {
-            $body = Rest::request($request)->getBody();
+            $body           = Rest::request($request)->getBody();
             $result['body'] = $body;
 
             $matches = [];
diff --git a/Api/EUVAT/EUVATVies.php b/Api/EUVAT/EUVATVies.php
index 6a46dc24e..f29fc3866 100644
--- a/Api/EUVAT/EUVATVies.php
+++ b/Api/EUVAT/EUVATVies.php
@@ -68,6 +68,11 @@ final class EUVATVies implements EUVATInterface
             $result['body'] = $body;
 
             $json = \json_decode($body, true);
+
+            if ($json === false) {
+                return $result;
+            }
+
             $result = \array_merge($result, self::parseResponse($json));
 
             $result['status'] = $json['userError'] === 'VALID' ? 0 : -1;
@@ -91,13 +96,13 @@ final class EUVATVies implements EUVATInterface
     ) : array
     {
         $result = [
-            'status' => -1,
-            'vat'   => 'C',
-            'name'   => 'C',
-            'city'   => 'C',
-            'postal' => 'C',
+            'status'  => -1,
+            'vat'     => 'C',
+            'name'    => 'C',
+            'city'    => 'C',
+            'postal'  => 'C',
             'address' => 'C',
-            'body' => '',
+            'body'    => '',
         ];
 
         $request = new HttpRequest(
@@ -110,10 +115,15 @@ final class EUVATVies implements EUVATInterface
         $request->setMethod(RequestMethod::GET);
 
         try {
-            $body = Rest::request($request)->getBody();
+            $body           = Rest::request($request)->getBody();
             $result['body'] = $body;
 
             $json = \json_decode($body, true);
+
+            if ($json === false) {
+                return $result;
+            }
+
             $result = \array_merge($result, self::parseResponse($json));
 
             if ($otherName === '') {
@@ -167,14 +177,14 @@ final class EUVATVies implements EUVATInterface
     private static function parseResponse(array $json) : array
     {
         $result = [
-            'vat' => '',
-            'name' => '',
-            'city' => '',
-            'postal' => '',
+            'vat'     => '',
+            'name'    => '',
+            'city'    => '',
+            'postal'  => '',
             'address' => '',
         ];
 
-        $result['vat'] = $json['isValid'] ? 'A' : 'B';
+        $result['vat']  = $json['isValid'] ? 'A' : 'B';
         $result['name'] = $json['isValid'];
 
         $result['city'] = \stripos($json['address'], "\n") !== false
@@ -194,9 +204,9 @@ final class EUVATVies implements EUVATInterface
             : $json['address'];
 
 
-        $result['name'] = $result['name'] === '---' ? '' : $result['name'];
-        $result['city'] = $result['city'] === '---' ? '' : $result['city'];
-        $result['postal'] = $result['postal'] === '---' ? '' : $result['postal'];
+        $result['name']    = $result['name'] === '---' ? '' : $result['name'];
+        $result['city']    = $result['city'] === '---' ? '' : $result['city'];
+        $result['postal']  = $result['postal'] === '---' ? '' : $result['postal'];
         $result['address'] = $result['address'] === '---' ? '' : $result['address'];
 
         return $result;
diff --git a/Business/Finance/Forensics.php b/Business/Finance/Forensics.php
index 3885a0d47..6a589eb15 100644
--- a/Business/Finance/Forensics.php
+++ b/Business/Finance/Forensics.php
@@ -34,7 +34,16 @@ final class Forensics
     {
     }
 
-    public static function benfordAnalysis(array $data)
+    /**
+     * Perform the Benford analysis
+     *
+     * @param array $data Data to analyze
+     *
+     * @return array
+     *
+     * @since 1.0.0
+     */
+    public static function benfordAnalysis(array $data) : array
     {
         $digits = \array_fill(1, 9, 0);
         $size   = \count($data);
@@ -52,6 +61,13 @@ final class Forensics
         return $results;
     }
 
+    /**
+     * Calculate the general Benford distribution
+     *
+     * @return array
+     *
+     * @since 1.0.0
+     */
     public static function expectedBenfordDistribution() : array
     {
         $expected = [];
diff --git a/DataStorage/Session/HttpSession.php b/DataStorage/Session/HttpSession.php
index 4c07f82c8..d10141cf3 100755
--- a/DataStorage/Session/HttpSession.php
+++ b/DataStorage/Session/HttpSession.php
@@ -96,6 +96,8 @@ final class HttpSession implements SessionInterface
             ]);
             \session_start();
             // @codeCoverageIgnoreEnd
+        } else {
+            throw new \Exception('Bad application workflow');
         }
 
         if ($this->inactivityInterval > 0
diff --git a/Image/Kernel.php b/Image/Kernel.php
index 9a829a283..50347fbdf 100755
--- a/Image/Kernel.php
+++ b/Image/Kernel.php
@@ -93,28 +93,42 @@ final class Kernel
         if (\count($kernel) === 3) {
             \imageconvolution($im, $kernel, 1, 0);
         } else {
-            // @todo: implement @see https://rosettacode.org/wiki/Image_convolution
-            // @todo: not working yet
             $dim  = [\imagesx($im), \imagesy($im)];
-            $kDim = [\count($kernel[1]), \count($kernel)]; // @todo: is the order correct? mhh...
+            $kDim = [\count($kernel[1]), \count($kernel)];
 
             $kWidthRadius  = NumericUtils::uRightShift($kDim[0], 1);
             $kHeightRadius = NumericUtils::uRightShift($kDim[1], 1);
 
-            for ($i = $dim[0] - 1; $i >= 0; --$i) {
-                for ($j = $dim[1] - 1; $j >= 0; --$j) {
-                    $newPixel = 0;
+            for ($y = 0; $y < $dim[1]; ++$y) {
+                for ($x = 0; $x < $dim[0]; ++$x) {
+                    $newR = 0;
+                    $newG = 0;
+                    $newB = 0;
 
-                    for ($ki = $kDim[0] - 1; $ki >= 0; --$ki) {
-                        for ($kj = $kDim[1] - 1; $kj >= 0; --$kj) {
-                            $newPixel += $kernel[$ki][$kj] * \imagecolorat($im,
-                                \min(\max($i + $ki - $kWidthRadius, 0), $dim[0] - 1),
-                                \min(\max($j + $kj - $kHeightRadius, 0), $dim[1] - 1)
+                    for ($ky = 0; $ky < $kDim[0]; ++$ky) {
+                        for ($kx = 0; $kx < $kDim[1]; ++$kx) {
+                            $pixel =  \imagecolorat($im,
+                                \min(\max($x + $kx - $kWidthRadius, 0), $dim[0] - 1),
+                                \min(\max($y + $ky - $kHeightRadius, 0), $dim[1] - 1)
                             );
+
+                            // old
+                            $r = ($pixel >> 16) & 0xFF;
+                            $g = ($pixel >> 8) & 0xFF;
+                            $b = $pixel & 0xFF;
+
+                            // new
+                            $newR += $r * $kernel[$ky][$kx];
+                            $newG += $g * $kernel[$ky][$kx];
+                            $newB += $b * $kernel[$ky][$kx];
                         }
                     }
 
-                    \imagesetpixel($im, $i, $j, (int) $newPixel);
+                    $newR = \max(0, \min(255, $newR));
+                    $newG = \max(0, \min(255, $newG));
+                    $newB = \max(0, \min(255, $newB));
+
+                    \imagesetpixel($im, $x, $y, (int) (($newR << 16) + ($newG << 8) | $newB));
                 }
             }
         }
diff --git a/Localization/ISO639CountryTrait.php b/Localization/ISO639CountryTrait.php
new file mode 100644
index 000000000..e065f844f
--- /dev/null
+++ b/Localization/ISO639CountryTrait.php
@@ -0,0 +1,542 @@
+<?php
+/**
+ * Karaka
+ *
+ * PHP Version 8.1
+ *
+ * @package   phpOMS\Localization
+ * @copyright Dennis Eichhorn
+ * @license   OMS License 2.0
+ * @version   1.0.0
+ * @link      https://jingga.app
+ */
+declare(strict_types=1);
+
+namespace phpOMS\Localization;
+
+/**
+ * ISO 639 country -> language trait.
+ *
+ * @package phpOMS\Localization
+ * @license OMS License 2.0
+ * @link    https://jingga.app
+ * @since   1.0.0
+ */
+trait ISO639CountryTrait
+{
+    /**
+     * Get language from country.
+     *
+     * @param string $country Country
+     *
+     * @return array
+     *
+     * @since 1.0.0
+     */
+    public static function languageFromCountry(string $country) : array
+    {
+        switch (\strtoupper($country)) {
+            case ISO3166TwoEnum::_AFG:
+                return [self::_PS, self::_UZ, self::_TK];
+            case ISO3166TwoEnum::_ALA:
+                return [self::_SV];
+            case ISO3166TwoEnum::_ALB:
+                return [self::_SQ];
+            case ISO3166TwoEnum::_DZA:
+                return [self::_AR];
+            case ISO3166TwoEnum::_ASM:
+                return [self::_EN, self::_SM];
+            case ISO3166TwoEnum::_AND:
+                return [self::_CA];
+            case ISO3166TwoEnum::_AGO:
+                return [self::_PT];
+            case ISO3166TwoEnum::_AIA:
+                return [self::_EN];
+            case ISO3166TwoEnum::_ATG:
+                return [self::_EN];
+            case ISO3166TwoEnum::_ARG:
+                return [self::_ES, self::_GN];
+            case ISO3166TwoEnum::_ARM:
+                return [self::_HY, self::_RU];
+            case ISO3166TwoEnum::_ABW:
+                return [self::_NL];
+            case ISO3166TwoEnum::_AUS:
+                return [self::_EN];
+            case ISO3166TwoEnum::_AUT:
+                return [self::_DE];
+            case ISO3166TwoEnum::_AZE:
+                return [self::_AZ, self::_RU, self::_HY];
+            case ISO3166TwoEnum::_BHS:
+                return [self::_EN];
+            case ISO3166TwoEnum::_BHR:
+                return [self::_AR];
+            case ISO3166TwoEnum::_BGD:
+                return [self::_BN];
+            case ISO3166TwoEnum::_BRB:
+                return [self::_EN];
+            case ISO3166TwoEnum::_BLR:
+                return [self::_BE, self::_RU];
+            case ISO3166TwoEnum::_BEL:
+                return [self::_NL, self::_FR, self::_DE];
+            case ISO3166TwoEnum::_BLZ:
+                return [self::_EN];
+            case ISO3166TwoEnum::_BEN:
+                return [self::_FR];
+            case ISO3166TwoEnum::_BMU:
+                return [self::_EN];
+            case ISO3166TwoEnum::_BTN:
+                return [self::_DZ];
+            case ISO3166TwoEnum::_BOL:
+                return [self::_ES, self::_QU, self::_AY];
+            case ISO3166TwoEnum::_BES:
+                return [self::_NL, self::_EN];
+            case ISO3166TwoEnum::_BIH:
+                return [self::_BS, self::_HR, self::_SR];
+            case ISO3166TwoEnum::_BWA:
+                return [self::_EN, self::_TN];
+            case ISO3166TwoEnum::_BVT:
+                return [];
+            case ISO3166TwoEnum::_BRA:
+                return [self::_PT];
+            case ISO3166TwoEnum::_IOT:
+                return [self::_EN];
+            case ISO3166TwoEnum::_BRN:
+                return [self::_MS];
+            case ISO3166TwoEnum::_BGR:
+                return [self::_BG];
+            case ISO3166TwoEnum::_BFA:
+                return [self::_FR];
+            case ISO3166TwoEnum::_BDI:
+                return [self::_RN, self::_FR];
+            case ISO3166TwoEnum::_CPV:
+                return [self::_PT];
+            case ISO3166TwoEnum::_KHM:
+                return [self::_KM];
+            case ISO3166TwoEnum::_CMR:
+                return [self::_FR, self::_EN];
+            case ISO3166TwoEnum::_CAN:
+                return [self::_EN, self::_FR];
+            case ISO3166TwoEnum::_CYM:
+                return [self::_EN];
+            case ISO3166TwoEnum::_CAF:
+                return [self::_FR, self::_SG];
+            case ISO3166TwoEnum::_TCD:
+                return [self::_FR, self::_AR];
+            case ISO3166TwoEnum::_CHL:
+                return [self::_ES];
+            break;
+            case ISO3166TwoEnum::_CHN:
+                return [self::_ZH];
+            break;
+            case ISO3166TwoEnum::_CXR:
+                return [self::_EN];
+            break;
+            case ISO3166TwoEnum::_CCK:
+                return [self::_EN];
+            case ISO3166TwoEnum::_COL:
+                return [self::_ES];
+            case ISO3166TwoEnum::_COM:
+                return [self::_AR, self::_FR];
+            case ISO3166TwoEnum::_COG:
+                return [self::_FR, self::_LN, self::_KG, self::_SW];
+            case ISO3166TwoEnum::_COD:
+                return [self::_FR, self::_LN, self::_KG, self::_SW];
+            case ISO3166TwoEnum::_COK:
+                return [self::_EN];
+            case ISO3166TwoEnum::_CRI:
+                return [self::_ES];
+            case ISO3166TwoEnum::_CIV:
+                return [self::_FR];
+            case ISO3166TwoEnum::_HRV:
+                return [self::_HR];
+            case ISO3166TwoEnum::_CUB:
+                return [self::_ES];
+            case ISO3166TwoEnum::_CUW:
+                return [self::_NL, self::_PA, self::_EN];
+            case ISO3166TwoEnum::_CYP:
+                return [self::_EL, self::_TR];
+            case ISO3166TwoEnum::_CZE:
+                return [self::_CS, self::_SK];
+            case ISO3166TwoEnum::_DNK:
+                return [self::_DA];
+            case ISO3166TwoEnum::_DJI:
+                return [self::_FR, self::_AR, self::_SO];
+            case ISO3166TwoEnum::_DMA:
+                return [self::_EN];
+            case ISO3166TwoEnum::_DOM:
+                return [self::_ES];
+            case ISO3166TwoEnum::_ECU:
+                return [self::_ES];
+            case ISO3166TwoEnum::_EGY:
+                return [self::_AR];
+            case ISO3166TwoEnum::_SLV:
+                return [self::_ES];
+            case ISO3166TwoEnum::_GNQ:
+                return [self::_ES, self::_FR, self::_PT];
+            case ISO3166TwoEnum::_ERI:
+                return [self::_TI, self::_AR, self::_EN];
+            case ISO3166TwoEnum::_EST:
+                return [self::_ET];
+            case ISO3166TwoEnum::_ETH:
+                return [self::_AM, self::_OM, self::_TI, self::_SO, self::_AR];
+            case ISO3166TwoEnum::_FLK:
+                return [self::_EN];
+            case ISO3166TwoEnum::_FRO:
+                return [self::_FO];
+            case ISO3166TwoEnum::_FJI:
+                return [self::_EN, self::_FJ, self::_HI, self::_UR];
+            case ISO3166TwoEnum::_FIN:
+                return [self::_FI, self::_SV];
+            case ISO3166TwoEnum::_FRA:
+                return [self::_FR];
+            case ISO3166TwoEnum::_GUF:
+                return [self::_FR];
+            case ISO3166TwoEnum::_PYF:
+                return [self::_FR, self::_TY];
+            case ISO3166TwoEnum::_ATF:
+                return [self::_FR];
+            case ISO3166TwoEnum::_GAB:
+                return [self::_FR];
+            case ISO3166TwoEnum::_GMB:
+                return [self::_EN];
+            case ISO3166TwoEnum::_GEO:
+                return [self::_KA];
+            case ISO3166TwoEnum::_DEU:
+                return [self::_DE];
+            case ISO3166TwoEnum::_GHA:
+                return [self::_EN];
+            case ISO3166TwoEnum::_GIB:
+                return [self::_EN];
+            case ISO3166TwoEnum::_GRC:
+                return [self::_EL];
+            case ISO3166TwoEnum::_GRL:
+                return [self::_KL];
+            case ISO3166TwoEnum::_GRD:
+                return [self::_EN];
+            case ISO3166TwoEnum::_GLP:
+                return [self::_FR];
+            case ISO3166TwoEnum::_GUM:
+                return [self::_EN, self::_CH, self::_ES];
+            case ISO3166TwoEnum::_GTM:
+                return [self::_ES];
+            case ISO3166TwoEnum::_GGY:
+                return [self::_EN, self::_FR];
+            case ISO3166TwoEnum::_GIN:
+                return [self::_FR];
+            case ISO3166TwoEnum::_GNB:
+                return [self::_PT];
+            case ISO3166TwoEnum::_GUY:
+                return [self::_EN];
+            case ISO3166TwoEnum::_HTI:
+                return [self::_FR, self::_HT];
+            case ISO3166TwoEnum::_HMD:
+                return [self::_EN];
+            case ISO3166TwoEnum::_VAT:
+                return [self::_IT, self::_LA];
+            case ISO3166TwoEnum::_HND:
+                return [self::_ES];
+            case ISO3166TwoEnum::_HKG:
+                return [self::_ZH, self::_EN];
+            case ISO3166TwoEnum::_HUN:
+                return [self::_HU];
+            case ISO3166TwoEnum::_ISL:
+                return [self::_IS];
+            case ISO3166TwoEnum::_IND:
+                return [self::_HI, self::_EN];
+            case ISO3166TwoEnum::_IDN:
+                return [self::_ID];
+            case ISO3166TwoEnum::_IRN:
+                return [self::_FA];
+            case ISO3166TwoEnum::_IRQ:
+                return [self::_AR, self::_KU];
+            case ISO3166TwoEnum::_IRL:
+                return [self::_GA, self::_EN];
+            case ISO3166TwoEnum::_IMN:
+                return [self::_EN, self::_GV];
+            case ISO3166TwoEnum::_ISR:
+                return [self::_HE, self::_AR];
+            case ISO3166TwoEnum::_ITA:
+                return [self::_IT];
+            case ISO3166TwoEnum::_JAM:
+                return [self::_EN];
+            case ISO3166TwoEnum::_JPN:
+                return [self::_JA];
+            case ISO3166TwoEnum::_JEY:
+                return [self::_EN, self::_FR];
+            case ISO3166TwoEnum::_JOR:
+                return [self::_AR];
+            case ISO3166TwoEnum::_KAZ:
+                return [self::_KK, self::_RU];
+            case ISO3166TwoEnum::_KEN:
+                return [self::_SW, self::_EN];
+            case ISO3166TwoEnum::_KIR:
+                return [self::_EN];
+            case ISO3166TwoEnum::_PRK:
+                return [self::_KO];
+            case ISO3166TwoEnum::_KOR:
+                return [self::_KO];
+            case ISO3166TwoEnum::_KWT:
+                return [self::_AR];
+            case ISO3166TwoEnum::_KGZ:
+                return [self::_KY, self::_RU];
+            case ISO3166TwoEnum::_LAO:
+                return [self::_LO];
+            case ISO3166TwoEnum::_LVA:
+                return [self::_LV];
+            case ISO3166TwoEnum::_LBN:
+                return [self::_AR, self::_FR];
+            case ISO3166TwoEnum::_LSO:
+                return [self::_EN, self::_ST];
+            case ISO3166TwoEnum::_LBR:
+                return [self::_EN];
+            case ISO3166TwoEnum::_LBY:
+                return [self::_AR];
+            case ISO3166TwoEnum::_LIE:
+                return [self::_DE];
+            case ISO3166TwoEnum::_LTU:
+                return [self::_LT];
+            case ISO3166TwoEnum::_LUX:
+                return [self::_LB, self::_FR, self::_DE];
+            case ISO3166TwoEnum::_MAC:
+                return [self::_ZH, self::_PT];
+            case ISO3166TwoEnum::_MDG:
+                return [self::_MG, self::_FR];
+            case ISO3166TwoEnum::_MWI:
+                return [self::_NY, self::_EN];
+            case ISO3166TwoEnum::_MYS:
+                return [self::_MS];
+            case ISO3166TwoEnum::_MDV:
+                return [self::_DV];
+            case ISO3166TwoEnum::_MLI:
+                return [self::_FR];
+            case ISO3166TwoEnum::_MLT:
+                return [self::_MT, self::_EN];
+            case ISO3166TwoEnum::_MHL:
+                return [self::_MH, self::_EN];
+            case ISO3166TwoEnum::_MTQ:
+                return [self::_FR];
+            case ISO3166TwoEnum::_MRT:
+                return [self::_AR, self::_FR];
+            case ISO3166TwoEnum::_MUS:
+                return [self::_EN, self::_FR];
+            case ISO3166TwoEnum::_MYT:
+                return [self::_FR];
+            case ISO3166TwoEnum::_MEX:
+                return [self::_ES];
+            case ISO3166TwoEnum::_FSM:
+                return [self::_EN];
+            case ISO3166TwoEnum::_MDA:
+                return [self::_RO];
+            case ISO3166TwoEnum::_MCO:
+                return [self::_FR];
+            case ISO3166TwoEnum::_MNG:
+                return [self::_MN];
+            case ISO3166TwoEnum::_MNE:
+                return [self::_SR, self::_BS, self::_SQ, self::_HR];
+            case ISO3166TwoEnum::_MSR:
+                return [self::_EN];
+            case ISO3166TwoEnum::_MAR:
+                return [self::_AR];
+            case ISO3166TwoEnum::_MOZ:
+                return [self::_PT];
+            case ISO3166TwoEnum::_MMR:
+                return [self::_MY];
+            case ISO3166TwoEnum::_NAM:
+                return [self::_EN, self::_AF];
+            case ISO3166TwoEnum::_NRU:
+                return [self::_NA, self::_EN];
+            case ISO3166TwoEnum::_NPL:
+                return [self::_NE];
+            case ISO3166TwoEnum::_NLD:
+                return [self::_NL];
+            case ISO3166TwoEnum::_NCL:
+                return [self::_FR];
+            case ISO3166TwoEnum::_NZL:
+                return [self::_EN, self::_MI];
+            case ISO3166TwoEnum::_NIC:
+                return [self::_ES];
+            case ISO3166TwoEnum::_NER:
+                return [self::_FR];
+            case ISO3166TwoEnum::_NGA:
+                return [self::_EN];
+            case ISO3166TwoEnum::_NIU:
+                return [self::_EN];
+            case ISO3166TwoEnum::_NFK:
+                return [self::_EN];
+            case ISO3166TwoEnum::_MNP:
+                return [self::_EN, self::_CH];
+            case ISO3166TwoEnum::_NOR:
+                return [self::_NO, self::_NB, self::_NN];
+            case ISO3166TwoEnum::_OMN:
+                return [self::_AR];
+            case ISO3166TwoEnum::_PAK:
+                return [self::_UR, self::_EN];
+            case ISO3166TwoEnum::_PLW:
+                return [self::_EN, self::_JA, self::_ZH];
+            case ISO3166TwoEnum::_PSE:
+                return [self::_AR];
+            case ISO3166TwoEnum::_PAN:
+                return [self::_ES];
+            case ISO3166TwoEnum::_PNG:
+                return [self::_EN, self::_HO];
+            case ISO3166TwoEnum::_PRY:
+                return [self::_ES, self::_GN];
+            case ISO3166TwoEnum::_PER:
+                return [self::_ES, self::_QU, self::_AY];
+            case ISO3166TwoEnum::_PHL:
+                return [self::_EN];
+            case ISO3166TwoEnum::_PCN:
+                return [self::_EN];
+            case ISO3166TwoEnum::_POL:
+                return [self::_PL];
+            case ISO3166TwoEnum::_PRT:
+                return [self::_PT];
+            case ISO3166TwoEnum::_PRI:
+                return [self::_ES, self::_EN];
+            case ISO3166TwoEnum::_QAT:
+                return [self::_AR];
+            case ISO3166TwoEnum::_REU:
+                return [self::_FR];
+            case ISO3166TwoEnum::_ROU:
+                return [self::_RO];
+            case ISO3166TwoEnum::_RUS:
+                return [self::_RU];
+            case ISO3166TwoEnum::_RWA:
+                return [self::_RW, self::_EN, self::_FR];
+            case ISO3166TwoEnum::_BLM:
+                return [self::_FR];
+            case ISO3166TwoEnum::_SHN:
+                return [self::_EN];
+            case ISO3166TwoEnum::_KNA:
+                return [self::_EN];
+            case ISO3166TwoEnum::_LCA:
+                return [self::_EN];
+            case ISO3166TwoEnum::_MAF:
+                return [self::_FR, self::_EN, self::_NL];
+            case ISO3166TwoEnum::_SPM:
+                return [self::_FR];
+            case ISO3166TwoEnum::_VCT:
+                return [self::_EN];
+            case ISO3166TwoEnum::_WSM:
+                return [self::_SM, self::_EN];
+            case ISO3166TwoEnum::_SMR:
+                return [self::_IT];
+            case ISO3166TwoEnum::_STP:
+                return [self::_PT];
+            case ISO3166TwoEnum::_SAU:
+                return [self::_AR];
+            case ISO3166TwoEnum::_SEN:
+                return [self::_FR, self::_WO];
+            case ISO3166TwoEnum::_SRB:
+                return [self::_SR];
+            case ISO3166TwoEnum::_SYC:
+                return [self::_FR, self::_EN];
+            case ISO3166TwoEnum::_SLE:
+                return [self::_EN];
+            case ISO3166TwoEnum::_SGP:
+                return [self::_EN, self::_MS, self::_TA, self::_ZH];
+            case ISO3166TwoEnum::_SXM:
+                return [self::_NL, self::_EN];
+            case ISO3166TwoEnum::_SVK:
+                return [self::_SK];
+            case ISO3166TwoEnum::_SVN:
+                return [self::_SL];
+            case ISO3166TwoEnum::_SLB:
+                return [self::_EN];
+            case ISO3166TwoEnum::_SOM:
+                return [self::_SO, self::_AR, self::_IT, self::_EN];
+            case ISO3166TwoEnum::_ZAF:
+                return [self::_ZU, self::_XH, self::_AF, self::_EN, self::_TN, self::_ST, self::_TS, self::_SS, self::_VE];
+            case ISO3166TwoEnum::_SGS:
+                return [self::_EN];
+            case ISO3166TwoEnum::_KOR:
+                return [self::_KO];
+            case ISO3166TwoEnum::_SSD:
+                return [self::_EN];
+            case ISO3166TwoEnum::_ESP:
+                return [self::_ES];
+            case ISO3166TwoEnum::_LKA:
+                return [self::_SI, self::_TA, self::_EN];
+            case ISO3166TwoEnum::_SDN:
+                return [self::_AR, self::_EN];
+            case ISO3166TwoEnum::_SUR:
+                return [self::_NL];
+            case ISO3166TwoEnum::_SJM:
+                return [self::_NO];
+            case ISO3166TwoEnum::_SWZ:
+                return [self::_EN, self::_SS];
+            case ISO3166TwoEnum::_SWE:
+                return [self::_SV];
+            case ISO3166TwoEnum::_CHE:
+                return [self::_DE, self::_FR, self::_IT];
+            case ISO3166TwoEnum::_SYR:
+                return [self::_AR];
+            case ISO3166TwoEnum::_TWN:
+                return [self::_ZH];
+            case ISO3166TwoEnum::_TJK:
+                return [self::_TG, self::_RU];
+            case ISO3166TwoEnum::_TZA:
+                return [self::_SW, self::_EN];
+            case ISO3166TwoEnum::_THA:
+                return [self::_TH];
+            case ISO3166TwoEnum::_TLS:
+                return [self::_PT];
+            case ISO3166TwoEnum::_TGO:
+                return [self::_FR];
+            case ISO3166TwoEnum::_TKL:
+                return [self::_EN];
+            case ISO3166TwoEnum::_TON:
+                return [self::_EN, self::_TO];
+            case ISO3166TwoEnum::_TTO:
+                return [self::_EN];
+            case ISO3166TwoEnum::_TUN:
+                return [self::_AR];
+            case ISO3166TwoEnum::_TUR:
+                return [self::_TR];
+            case ISO3166TwoEnum::_TKM:
+                return [self::_TK, self::_RU];
+            case ISO3166TwoEnum::_TCA:
+                return [self::_EN];
+            case ISO3166TwoEnum::_TUV:
+                return [self::_EN];
+            case ISO3166TwoEnum::_UGA:
+                return [self::_EN, self::_SW];
+            case ISO3166TwoEnum::_UKR:
+                return [self::_UK];
+            case ISO3166TwoEnum::_ARE:
+                return [self::_AR];
+            case ISO3166TwoEnum::_GBR:
+                return [self::_EN, self::_CY, self::_GD, self::_GA];
+            case ISO3166TwoEnum::_USA:
+                return [self::_EN, self::_ES];
+            case ISO3166TwoEnum::_UMI:
+                return [self::_EN];
+            case ISO3166TwoEnum::_URY:
+                return [self::_ES];
+            case ISO3166TwoEnum::_UZB:
+                return [self::_UZ, self::_RU];
+            case ISO3166TwoEnum::_VUT:
+                return [self::_BI, self::_EN, self::_FR];
+            case ISO3166TwoEnum::_VEN:
+                return [self::_ES];
+            case ISO3166TwoEnum::_VNM:
+                return [self::_VI];
+            case ISO3166TwoEnum::_VGB:
+                return [self::_EN];
+            case ISO3166TwoEnum::_VIR:
+                return [self::_EN];
+            case ISO3166TwoEnum::_WLF:
+                return [self::_FR];
+            case ISO3166TwoEnum::_ESH:
+                return [self::_AR, self::_ES];
+            case ISO3166TwoEnum::_YEM:
+                return [self::_AR];
+            case ISO3166TwoEnum::_ZMB:
+                return [self::_EN];
+            case ISO3166TwoEnum::_ZWE:
+                return [self::_EN, self::_SN, self::_ND];
+            default:
+                return [];
+        }
+    }
+}
diff --git a/Localization/ISO639Enum.php b/Localization/ISO639Enum.php
index d50518cdd..6f3f83332 100755
--- a/Localization/ISO639Enum.php
+++ b/Localization/ISO639Enum.php
@@ -118,6 +118,8 @@ class ISO639Enum extends Enum
 
     public const _FJ = 'Fijian';
 
+    public const _FIL = 'Filipino';
+
     public const _FO = 'Faroese';
 
     public const _FR = 'French';
@@ -393,4 +395,6 @@ class ISO639Enum extends Enum
     public const _ZH = 'Chinese';
 
     public const _ZU = 'Zulu';
+
+    use ISO639CountryTrait;
 }
diff --git a/Localization/ISO639x1Enum.php b/Localization/ISO639x1Enum.php
index 3cf845109..b787646e8 100755
--- a/Localization/ISO639x1Enum.php
+++ b/Localization/ISO639x1Enum.php
@@ -74,6 +74,8 @@ class ISO639x1Enum extends Enum
 
     public const _BG = 'bg';
 
+    public const _MS = 'ms';
+
     public const _MY = 'my';
 
     public const _CA = 'ca';
@@ -86,6 +88,8 @@ class ISO639x1Enum extends Enum
 
     public const _CV = 'cv';
 
+    public const _KU = 'ku';
+
     public const _KW = 'kw';
 
     public const _KO = 'ko';
@@ -120,6 +124,8 @@ class ISO639x1Enum extends Enum
 
     public const _FI = 'fi';
 
+    public const _FIL = 'fil';
+
     public const _FR = 'fr';
 
     public const _FF = 'ff';
@@ -262,6 +268,8 @@ class ISO639x1Enum extends Enum
 
     public const _OS = 'os';
 
+    public const _PA = 'pa';
+
     public const _PI = 'pi';
 
     public const _FA = 'fa';
@@ -322,6 +330,8 @@ class ISO639x1Enum extends Enum
 
     public const _TE = 'te';
 
+    public const _TG = 'tg';
+
     public const _TH = 'th';
 
     public const _TI = 'ti';
@@ -348,6 +358,8 @@ class ISO639x1Enum extends Enum
 
     public const _UR = 'ur';
 
+    public const _UZ = 'uz';
+
     public const _VE = 've';
 
     public const _VI = 'vi';
@@ -373,4 +385,6 @@ class ISO639x1Enum extends Enum
     public const _ZU = 'zu';
 
     public const _ZH = 'zh';
+
+    use ISO639CountryTrait;
 }
diff --git a/Localization/ISO639x2Enum.php b/Localization/ISO639x2Enum.php
index e401c0965..4941a4557 100755
--- a/Localization/ISO639x2Enum.php
+++ b/Localization/ISO639x2Enum.php
@@ -120,6 +120,8 @@ class ISO639x2Enum extends Enum
 
     public const _FI = 'fin';
 
+    public const _FIL = 'fil';
+
     public const _FR = 'fra';
 
     public const _FF = 'ful';
@@ -393,4 +395,6 @@ class ISO639x2Enum extends Enum
     public const _ZA = 'zha';
 
     public const _ZU = 'zul';
+
+    use ISO639CountryTrait;
 }
diff --git a/Localization/L11nManager.php b/Localization/L11nManager.php
index 19996a480..f48553eb6 100755
--- a/Localization/L11nManager.php
+++ b/Localization/L11nManager.php
@@ -17,6 +17,7 @@ namespace phpOMS\Localization;
 use phpOMS\Autoloader;
 use phpOMS\Log\FileLogger;
 use phpOMS\Module\ModuleAbstract;
+use phpOMS\Stdlib\Base\FloatInt;
 
 /**
  * Localization class.
@@ -206,22 +207,31 @@ final class L11nManager
     /**
      * Print a numeric value
      *
-     * @param Localization $l11n    Localization
-     * @param int|float    $numeric Numeric value to print
-     * @param null|string  $format  Format type to use
+     * @param Localization       $l11n    Localization
+     * @param int|float|FloatInt $numeric Numeric value to print
+     * @param null|string        $format  Format type to use
      *
      * @return string
      *
      * @since 1.0.0
      */
-    public function getNumeric(Localization $l11n, int | float $numeric, string $format = null) : string
+    public function getNumeric(Localization $l11n, int | float | FloatInt $numeric, string $format = null) : string
     {
-        return \number_format(
-            $numeric,
-            $l11n->getPrecision()[$format ?? 'medium'],
-            $l11n->getDecimal(),
-            $l11n->getThousands()
+        if (!($numeric instanceof FloatInt)) {
+            return \number_format(
+                $numeric,
+                $l11n->getPrecision()[$format ?? 'medium'],
+                $l11n->getDecimal(),
+                $l11n->getThousands()
+            );
+        }
+
+        $numeric->setLocalization(
+            $l11n->getThousands(),
+            $l11n->getDecimal()
         );
+
+        return $numeric->getAmount($l11n->getPrecision()[$format ?? 'medium']);
     }
 
     /**
@@ -247,17 +257,23 @@ final class L11nManager
     /**
      * Print a currency
      *
-     * @param Localization $l11n     Localization
-     * @param int|float    $currency Currency value to print
-     * @param null|string  $format   Format type to use
-     * @param null|string  $symbol   Currency name/symbol
-     * @param int          $divide   Divide currency by divisor
+     * @param Localization    $l11n      Localization
+     * @param int|float|Money $currency  Currency value to print
+     * @param null|string     $symbol    Currency name/symbol
+     * @param null|string     $format    Format type to use
+     * @param int             $divide    Divide currency by divisor
      *
      * @return string
      *
      * @since 1.0.0
      */
-    public function getCurrency(Localization $l11n, int | float $currency, string $format = null, string $symbol = null, int $divide = 1) : string
+    public function getCurrency(
+        Localization $l11n,
+        int | float | Money $currency,
+        string $symbol = null,
+        string $format = null,
+        int $divide = 1
+    ) : string
     {
         $language = $l11n->getLanguage();
         $symbol ??= $l11n->getCurrency();
@@ -266,7 +282,7 @@ final class L11nManager
             $currency = (int) ($currency * \pow(10, Money::MAX_DECIMALS));
         }
 
-        if (!empty($symbol)) {
+        if ($divide > 1 && !empty($symbol)) {
             if ($divide === 1000) {
                 $symbol = $this->getHtml($language, '0', '0', 'CurrencyK') . $symbol;
             } elseif ($divide === 1000000) {
@@ -276,7 +292,10 @@ final class L11nManager
             }
         }
 
-        $money = new Money((int) ($currency / $divide));
+        $money = !($currency instanceof Money)
+            ? new Money((int) ($currency / $divide))
+            : $currency;
+
         $money->setLocalization(
             $l11n->getThousands(),
             $l11n->getDecimal(),
diff --git a/Localization/LanguageDetection/NgramParser.php b/Localization/LanguageDetection/NgramParser.php
index 878923eb8..e23fef99e 100644
--- a/Localization/LanguageDetection/NgramParser.php
+++ b/Localization/LanguageDetection/NgramParser.php
@@ -108,14 +108,14 @@ abstract class NgramParser
             }
         }
 
-        if (!\count($tokens)) {
+        if (empty($tokens)) {
             return [];
         }
 
         $tokens = \array_merge(...$tokens);
         unset($tokens['_']);
 
-        \arsort($tokens, SORT_NUMERIC);
+        \arsort($tokens, \SORT_NUMERIC);
 
         return \array_slice(
             \array_keys($tokens),
diff --git a/Localization/LanguageDetection/Tokenizer/WhitespaceTokenizer.php b/Localization/LanguageDetection/Tokenizer/WhitespaceTokenizer.php
index 722a10ca0..3f221dbc3 100644
--- a/Localization/LanguageDetection/Tokenizer/WhitespaceTokenizer.php
+++ b/Localization/LanguageDetection/Tokenizer/WhitespaceTokenizer.php
@@ -39,7 +39,7 @@ class WhitespaceTokenizer
             function ($word) {
                 return "_{$word}_";
             },
-            \preg_split('/[^\pL]+(?<![\x27\x60\x{2019}])/u', $str, -1, PREG_SPLIT_NO_EMPTY)
+            \preg_split('/[^\pL]+(?<![\x27\x60\x{2019}])/u', $str, -1, \PREG_SPLIT_NO_EMPTY)
         );
     }
 }
diff --git a/Localization/Localization.php b/Localization/Localization.php
index 7e58e65a2..fa20b8bc4 100755
--- a/Localization/Localization.php
+++ b/Localization/Localization.php
@@ -42,7 +42,7 @@ class Localization implements \JsonSerializable
      * @var string
      * @since 1.0.0
      */
-    protected string $country = ISO3166TwoEnum::_USA;
+    protected string $country = ISO3166TwoEnum::_XXX;
 
     /**
      * Timezone.
@@ -338,14 +338,12 @@ class Localization implements \JsonSerializable
      *
      * @return void
      *
-     * @throws InvalidEnumValue This exception is thrown if the country is invalid
-     *
      * @since 1.0.0
      */
     public function setCountry(string $country) : void
     {
         if (!ISO3166TwoEnum::isValidValue($country)) {
-            throw new InvalidEnumValue($country);
+            $this->country = '';
         }
 
         $this->country = $country;
diff --git a/Math/Stochastic/NaiveBayesClassifier.php b/Math/Stochastic/NaiveBayesClassifier.php
index d0d195890..8d28325a1 100755
--- a/Math/Stochastic/NaiveBayesClassifier.php
+++ b/Math/Stochastic/NaiveBayesClassifier.php
@@ -201,7 +201,7 @@ final class NaiveBayesClassifier
                         $this->probabilities['attr'][$attr] = ['data' => []];
                     }
 
-                    foreach ($valueArray['data'] as $word => $count) {
+                    foreach ($valueArray['data'] as $word => $_) {
                         if (!isset($this->dict[$criteria][$attr]['data'][$word])) {
                             continue;
                         }
diff --git a/Message/Http/HttpRequest.php b/Message/Http/HttpRequest.php
index d2294b13f..273c281e1 100755
--- a/Message/Http/HttpRequest.php
+++ b/Message/Http/HttpRequest.php
@@ -17,6 +17,7 @@ namespace phpOMS\Message\Http;
 use phpOMS\Localization\Localization;
 use phpOMS\Message\RequestAbstract;
 use phpOMS\Router\RouteVerb;
+use phpOMS\Security\Guard;
 use phpOMS\Uri\HttpUri;
 use phpOMS\Uri\UriInterface;
 
@@ -94,6 +95,7 @@ final class HttpRequest extends RequestAbstract
         self::cleanupGlobals();
 
         $this->data = \array_change_key_case($this->data, \CASE_LOWER);
+        $this->data = Guard::unslash($this->data);
     }
 
     /**
@@ -106,9 +108,10 @@ final class HttpRequest extends RequestAbstract
     private function initCurrentRequest() : void
     {
         $this->uri   = HttpUri::fromCurrent();
-        $this->data  = $_GET + $_POST;
+        $this->data  = $_POST + $_GET;
         $this->files = $_FILES;
         $this->header->l11n->setLanguage($this->getRequestLanguage());
+        $this->header->l11n->setCountry($this->getRequestCountry());
 
         $this->initNonGetData();
     }
@@ -381,6 +384,31 @@ final class HttpRequest extends RequestAbstract
         return \strtolower($firstLocalComponents[0]); // @codeCoverageIgnore
     }
 
+    /**
+     * Get request language
+     *
+     * @return string
+     *
+     * @since 1.0.0
+     */
+    public function getRequestCountry() : string
+    {
+        if (!isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
+            return '';
+        }
+
+        // @codeCoverageIgnoreStart
+        $components   = \explode(';', $_SERVER['HTTP_ACCEPT_LANGUAGE']);
+        $locals       = \stripos($components[0], ',') !== false
+            ? $locals = \explode(',', $components[0])
+            : $components;
+
+        $firstLocalComponents = \explode('-', $locals[0]);
+        // @codeCoverageIgnoreEnd
+
+        return \strtoupper($firstLocalComponents[1] ?? ''); // @codeCoverageIgnore
+    }
+
     /**
      * Get request locale
      *
@@ -396,7 +424,9 @@ final class HttpRequest extends RequestAbstract
 
         // @codeCoverageIgnoreStart
         $components = \explode(';', $_SERVER['HTTP_ACCEPT_LANGUAGE']);
-        $locals     = \stripos($components[0], ',') !== false ? $locals = \explode(',', $components[0]) : $components;
+        $locals     = \stripos($components[0], ',') !== false
+            ? $locals = \explode(',', $components[0])
+            : $components;
         // @codeCoverageIgnoreEnd
 
         return \str_replace('-', '_', $locals[0]); // @codeCoverageIgnore
diff --git a/Message/Http/Rest.php b/Message/Http/Rest.php
index 453f33924..08d1449f4 100755
--- a/Message/Http/Rest.php
+++ b/Message/Http/Rest.php
@@ -92,7 +92,7 @@ final class Rest
                 /* @phpstan-ignore-next-line */
                 $data = self::createMultipartData($boundary, $request->getData());
 
-                // @todo: replace boundary/ with the correct boundary= in the future.
+                // @todo: Replace boundary/ with the correct boundary= in the future.
                 //        Currently this cannot be done due to a bug. If we do it now the server cannot correclty populate php://input
                 $headers['content-type']   = 'Content-Type: multipart/form-data; boundary/' . $boundary;
                 $headers['content-length'] = 'Content-Length: ' . \strlen($data);
diff --git a/Message/RequestAbstract.php b/Message/RequestAbstract.php
index 4cabaeef4..2c131152b 100755
--- a/Message/RequestAbstract.php
+++ b/Message/RequestAbstract.php
@@ -336,6 +336,18 @@ abstract class RequestAbstract implements MessageInterface
         return $this->header->l11n->getLanguage();
     }
 
+    /**
+     * Get request language.
+     *
+     * @return string
+     *
+     * @since 1.0.0
+     */
+    public function getCountry() : string
+    {
+        return $this->header->l11n->getCountry();
+    }
+
     /**
      * Get request hash.
      *
diff --git a/Model/Html/Head.php b/Model/Html/Head.php
index 885e6db3c..92cf0b8a2 100755
--- a/Model/Html/Head.php
+++ b/Model/Html/Head.php
@@ -101,8 +101,9 @@ final class Head implements RenderableInterface
     /**
      * Add asset.
      *
-     * @param int    $type Asset type
-     * @param string $uri  Asset uri
+     * @param int    $type       Asset type
+     * @param string $uri        Asset uri
+     * @param array  $attributes Asset attributes
      *
      * @return void
      *
@@ -116,8 +117,9 @@ final class Head implements RenderableInterface
     /**
      * Add tag.
      *
-     * @param int    $type Asset type
-     * @param string $uri  Asset uri
+     * @param int    $type       Asset type
+     * @param string $content    Asset content
+     * @param array  $attributes Asset attributes
      *
      * @return void
      *
diff --git a/Router/RouterInterface.php b/Router/RouterInterface.php
index cc4b1f7b1..23b29210e 100755
--- a/Router/RouterInterface.php
+++ b/Router/RouterInterface.php
@@ -74,7 +74,7 @@ interface RouterInterface
      * @param string  $uri     Route
      * @param string  $csrf    CSRF token
      * @param int     $verb    Route verb
-     * @param string  $app     Application name
+     * @param int     $app     Application name
      * @param int     $unitId  Organization id
      * @param Account $account Account
      * @param array   $data    Data
@@ -87,7 +87,7 @@ interface RouterInterface
         string $uri,
         string $csrf = null,
         int $verb = RouteVerb::GET,
-        string $app = null,
+        int $app = null,
         int $unitId = null,
         Account $account = null,
         array $data = null
diff --git a/Router/SocketRouter.php b/Router/SocketRouter.php
index db7ca35ac..3d14fae5f 100755
--- a/Router/SocketRouter.php
+++ b/Router/SocketRouter.php
@@ -113,7 +113,7 @@ final class SocketRouter implements RouterInterface
         string $uri,
         string $csrf = null,
         int $verb = RouteVerb::GET,
-        string $app = null,
+        int $app = null,
         int $unitId = null,
         Account $account = null,
         array $data = null
diff --git a/Router/WebRouter.php b/Router/WebRouter.php
index b5c07cd78..f26b2f281 100755
--- a/Router/WebRouter.php
+++ b/Router/WebRouter.php
@@ -115,7 +115,7 @@ final class WebRouter implements RouterInterface
         string $uri,
         string $csrf = null,
         int $verb = RouteVerb::GET,
-        string $app = null,
+        int $app = null,
         int $unitId = null,
         Account $account = null,
         array $data = null
diff --git a/Security/Guard.php b/Security/Guard.php
index 92a980ada..eb7c6e197 100644
--- a/Security/Guard.php
+++ b/Security/Guard.php
@@ -52,4 +52,29 @@ final class Guard
     {
         return \stripos(FileUtils::absolute($path), FileUtils::absolute(empty($base) ? self::$BASE_PATH : $base)) === 0;
     }
+
+    /**
+     * Remove slashes from a string or array
+     *
+     * @param string|array $data Data to unslash
+     *
+     * @return string|array
+     *
+     * @since 1.0.0
+     */
+    public static function unslash(string | array $data) : string|array
+    {
+        if (\is_array($data)) {
+            $result = [];
+            foreach ($data as $key => $value) {
+                $result[$key] = self::unslash($value);
+            }
+
+            return $result;
+        } elseif (\is_string($data)) {
+            return \stripslashes($data);
+        }
+
+        return $data;
+    }
 }
diff --git a/Stdlib/Graph/Graph.php b/Stdlib/Graph/Graph.php
index 75402db2f..3b8104161 100755
--- a/Stdlib/Graph/Graph.php
+++ b/Stdlib/Graph/Graph.php
@@ -633,6 +633,18 @@ class Graph
         return $longestPath;
     }
 
+    /**
+     * Perform depth first traversal
+     *
+     * @param Node  $node         Graph node
+     * @param array $visited      Is the node already visited
+     * @param array $path         Array of nodes (a path through the graph = connected nodes)
+     * @param array $longestPath  Array of nodes (longest path through the graph = connected nodes)
+     *
+     * @return void
+     *
+     * @since 1.0.0
+     */
     private function longestPathDfs(Node $node, &$visited, &$path, &$longestPath)
     {
         $visited[$node->getId()] = true;
diff --git a/Stdlib/Graph/Node.php b/Stdlib/Graph/Node.php
index fd6829379..9a888b0d1 100755
--- a/Stdlib/Graph/Node.php
+++ b/Stdlib/Graph/Node.php
@@ -172,6 +172,15 @@ class Node
         return $this->edges[$key] ?? null;
     }
 
+    /**
+     * Check if the node has a certain neighbor
+     *
+     * @param Node $node Neighbor node
+     *
+     * @return bool
+     *
+     * @since 1.0.0
+     */
     public function hasNeighbor(self $node) : bool
     {
         foreach ($this->edges as $edge) {
diff --git a/Stdlib/Map/MultiMap.php b/Stdlib/Map/MultiMap.php
index 9d384756f..deea5ccef 100755
--- a/Stdlib/Map/MultiMap.php
+++ b/Stdlib/Map/MultiMap.php
@@ -166,7 +166,7 @@ final class MultiMap implements \Countable
      */
     private function garbageCollectValues() : void
     {
-        foreach ($this->values as $valueKey => $value) {
+        foreach ($this->values as $valueKey => $_) {
             if (!\in_array($valueKey, $this->keys)) {
                 unset($this->values[$valueKey]);
             }
diff --git a/System/File/Ftp/Directory.php b/System/File/Ftp/Directory.php
index bcd019d8f..20ac461f7 100755
--- a/System/File/Ftp/Directory.php
+++ b/System/File/Ftp/Directory.php
@@ -391,6 +391,8 @@ class Directory extends FileAbstract implements DirectoryInterface
                 continue;
             }
 
+            $e = [];
+
             list(
                 $e['permission'],
                 $e['number'],
diff --git a/Uri/UriFactory.php b/Uri/UriFactory.php
index f297407d1..3b3bbc78e 100755
--- a/Uri/UriFactory.php
+++ b/Uri/UriFactory.php
@@ -86,7 +86,7 @@ final class UriFactory
         if ($identifier === '*') {
             self::$uri = [];
         } else {
-            foreach (self::$uri as $key => $value) {
+            foreach (self::$uri as $key => $_) {
                 if (\stripos($key, $identifier) === 0) {
                     unset(self::$uri[$key]);
                 }
diff --git a/Utils/Barcode/QR.php b/Utils/Barcode/QR.php
index 601793d43..82bde7fc5 100755
--- a/Utils/Barcode/QR.php
+++ b/Utils/Barcode/QR.php
@@ -794,7 +794,7 @@ class QR extends TwoDAbstract
     {
         $b       = 0;
         $bitMask = [];
-        $bitMask = $this->generateMaskNo($maskNo, $width, $s, $d);
+        $bitMask = $this->generateMaskNo($maskNo, $width, $s);
 
         if ($maskGenOnly) {
             return 0;
diff --git a/Utils/Converter/Currency.php b/Utils/Converter/Currency.php
index d981eface..2567238ea 100755
--- a/Utils/Converter/Currency.php
+++ b/Utils/Converter/Currency.php
@@ -114,7 +114,7 @@ final class Currency
             $node                = $xml->Cube->Cube->Cube;
             self::$ecbCurrencies = [];
 
-            foreach ($node as $key => $value) {
+            foreach ($node as $value) {
                 /** @var null|array<string, string|int|float> $attributes */
                 if (($attributes = $value->attributes()) === null) {
                     continue;
diff --git a/Utils/Parser/Calendar/ICalParser.php b/Utils/Parser/Calendar/ICalParser.php
index b3e81a519..2f4f822b0 100644
--- a/Utils/Parser/Calendar/ICalParser.php
+++ b/Utils/Parser/Calendar/ICalParser.php
@@ -12,9 +12,27 @@
  */
 declare(strict_types=1);
 
+/**
+ * iCal parser.
+ *
+ * @package phpOMS\Utils\Parser\Calendar
+ * @license OMS License 2.0
+ * @link    https://jingga.app
+ * @since   1.0.0
+ */
 class ICalParser
 {
-    public static function parse(string $data) {
+    /**
+     * Parse iCal data
+     *
+     * @param string $data iCal data
+     *
+     * @return array
+     *
+     * @since 1.0.0
+     */
+    public static function parse(string $data) : array
+    {
         \preg_match_all('/BEGIN:VEVENT(.*?)END:VEVENT/s', $data, $matches, PREG_SET_ORDER);
 
         $eventList = [];
@@ -54,8 +72,19 @@ class ICalParser
 
             $eventList[] = $event;
         }
+
+        return $eventList;
     }
 
+    /**
+     * Parse rrule
+     *
+     * @param string $rruleString rrule string
+     *
+     * @return array
+     *
+     * @since 1.0.0
+     */
     private static function parseRRule($rruleString) : array
     {
         $rrule = [];
diff --git a/Utils/Parser/Spreadsheet/SpreadsheetWriter.php b/Utils/Parser/Spreadsheet/SpreadsheetWriter.php
index 9fc793023..61551d808 100644
--- a/Utils/Parser/Spreadsheet/SpreadsheetWriter.php
+++ b/Utils/Parser/Spreadsheet/SpreadsheetWriter.php
@@ -28,16 +28,6 @@ use PhpOffice\PhpSpreadsheet\Writer\Pdf;
  */
 class SpreadsheetWriter extends Pdf
 {
-    /**
-     * Render Pdf
-     *
-     * @todo: can be removed?
-     *
-     * @var bool
-     * @since 1.0.0
-     */
-    protected bool $isMPdf = true;
-
     /**
      * Save Spreadsheet to file.
      *
@@ -47,6 +37,8 @@ class SpreadsheetWriter extends Pdf
      */
     public function toPdfString(): string
     {
+        $this->isMPdf = true;
+
         $pdf = new \Mpdf\Mpdf();
 
         //  Check for paper size and page orientation
diff --git a/Utils/StringUtils.php b/Utils/StringUtils.php
index b375a669e..881c1513c 100755
--- a/Utils/StringUtils.php
+++ b/Utils/StringUtils.php
@@ -290,7 +290,7 @@ final class StringUtils
                 break;
         }
 
-        // @todo: this should not be necessary
+        // @todo: This should not be necessary but the algorithm above allows for weird combinations.
         return \str_replace(
             ['</del></del>', '</ins></ins>', '<ins></ins>', '<del></del>', '</ins><ins>', '</del><del>', '</ins> <del>', '</del> <ins>'],
             ['</del>', '</ins>', '', '', '', '', '</ins><del>', '</del><ins>'],
diff --git a/Views/View.php b/Views/View.php
index d9b852430..f54ef7eb2 100755
--- a/Views/View.php
+++ b/Views/View.php
@@ -16,10 +16,12 @@ namespace phpOMS\Views;
 
 use phpOMS\Localization\L11nManager;
 use phpOMS\Localization\Localization;
+use phpOMS\Localization\Money;
 use phpOMS\Message\RequestAbstract;
 use phpOMS\Message\ResponseAbstract;
 use phpOMS\Module\Exception\InvalidModuleException;
 use phpOMS\Module\Exception\InvalidThemeException;
+use phpOMS\Stdlib\Base\FloatInt;
 
 /**
  * Basic view which can be used as basis for specific implementations.
@@ -308,14 +310,14 @@ class View extends ViewAbstract
     /**
      * Print a numeric value
      *
-     * @param int|float   $numeric Numeric value to print
-     * @param null|string $format  Format type to use
+     * @param int|float|FloatInt $numeric Numeric value to print
+     * @param null|string        $format  Format type to use
      *
      * @return string
      *
      * @since 1.0.0
      */
-    public function getNumeric(int | float $numeric, string $format = null) : string
+    public function getNumeric(int | float | FloatInt $numeric, string $format = null) : string
     {
         return $this->l11nManager->getNumeric($this->l11n, $numeric, $format);
     }
@@ -338,18 +340,24 @@ class View extends ViewAbstract
     /**
      * Print a currency
      *
-     * @param int|float   $currency Currency value to print
-     * @param null|string $format   Format type to use
-     * @param null|string $symbol   Currency name/symbol
-     * @param int         $divide   Divide currency by divisor
+     * @param int|float|Money $currency Currency value to print
+     * @param int             $precision Precision
+     * @param null|string     $symbol    Currency name/symbol
+     * @param null|string     $format    Format type to use
+     * @param int             $divide    Divide currency by divisor
      *
      * @return string
      *
      * @since 1.0.0
      */
-    public function getCurrency(int | float $currency, string $format = null, string $symbol = null, int $divide = 1) : string
+    public function getCurrency(
+        int | float | Money $currency,
+        string $symbol = null,
+        string $format = null,
+        int $divide = 1
+    ) : string
     {
-        return $this->l11nManager->getCurrency($this->l11n, $currency, $format, $symbol, $divide);
+        return $this->l11nManager->getCurrency($this->l11n, $currency, $symbol, $format, $divide);
     }
 
     /**
diff --git a/tests/Api/EUVAT/EUVATBffOnlineTest.php b/tests/Api/EUVAT/EUVATBffOnlineTest.php
new file mode 100644
index 000000000..598e746d6
--- /dev/null
+++ b/tests/Api/EUVAT/EUVATBffOnlineTest.php
@@ -0,0 +1,39 @@
+<?php
+/**
+ * Karaka
+ *
+ * PHP Version 8.1
+ *
+ * @package   tests
+ * @copyright Dennis Eichhorn
+ * @license   OMS License 2.0
+ * @version   1.0.0
+ * @link      https://jingga.app
+ */
+declare(strict_types=1);
+
+namespace phpOMS\tests\Api\EUVAT;
+
+use phpOMS\Api\EUVAT\EUVATBffOnline;
+
+/**
+ * @testdox phpOMS\tests\Api\EUVAT\EUVATBffOnlineTest: EU VAT German BFF Online validation
+ *
+ * @internal
+ */
+final class EUVATBffOnlineTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * @testdox The BFF Online service can validate a valid VAT ID
+     * @covers phpOMS\Api\EUVAT\EUVATBffOnline
+     * @group framework
+     */
+    public function testValidateInvalidId() : void
+    {
+        $bff = new EUVATBffOnline();
+        $status = $bff->validate('DE123456789', 'DE123456789');
+
+        self::assertEquals(0, $status['status']);
+        self::assertEquals('C', $status['vat']);
+    }
+}
diff --git a/tests/Api/EUVAT/EUVATViesTest.php b/tests/Api/EUVAT/EUVATViesTest.php
new file mode 100644
index 000000000..cade1022b
--- /dev/null
+++ b/tests/Api/EUVAT/EUVATViesTest.php
@@ -0,0 +1,39 @@
+<?php
+/**
+ * Karaka
+ *
+ * PHP Version 8.1
+ *
+ * @package   tests
+ * @copyright Dennis Eichhorn
+ * @license   OMS License 2.0
+ * @version   1.0.0
+ * @link      https://jingga.app
+ */
+declare(strict_types=1);
+
+namespace phpOMS\tests\Api\EUVAT;
+
+use phpOMS\Api\EUVAT\EUVATVies;
+
+/**
+ * @testdox phpOMS\tests\Api\EUVAT\EUVATViesTest: EU VAT Vies validation
+ *
+ * @internal
+ */
+final class EUVATViesTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * @testdox The VIES service can validate a valid VAT ID
+     * @covers phpOMS\Api\EUVAT\EUVATVies
+     * @group framework
+     */
+    public function testValidateInvalidId() : void
+    {
+        $vies = new EUVATVies();
+        $status = $vies->validate('DE123456789');
+
+        self::assertEquals(0, $status['status']);
+        self::assertEquals('C', $status['vat']);
+    }
+}
diff --git a/tests/Message/Http/HttpRequestLanguage.php b/tests/Message/Http/HttpRequestLanguage.php
index b47bcb131..9bdb12c00 100755
--- a/tests/Message/Http/HttpRequestLanguage.php
+++ b/tests/Message/Http/HttpRequestLanguage.php
@@ -7,4 +7,4 @@ use phpOMS\Message\Http\HttpRequest;
 
 $request = HttpRequest::createFromSuperglobals();
 
-echo $request->getRequestLanguage();
+echo $request->getCountry();
diff --git a/tests/Message/Http/HttpRequestTest.php b/tests/Message/Http/HttpRequestTest.php
index 9b012d3ee..b26dd3993 100755
--- a/tests/Message/Http/HttpRequestTest.php
+++ b/tests/Message/Http/HttpRequestTest.php
@@ -59,7 +59,7 @@ final class HttpRequestTest extends \PHPUnit\Framework\TestCase
         self::assertEquals('', $request->__toString());
         self::assertFalse($request->hasData('key'));
         self::assertNull($request->getData('key'));
-        self::assertEquals('en', $request->getRequestLanguage());
+        self::assertEquals('en', $request->getCountry());
         self::assertEquals('en_US', $request->getLocale());
     }
 
diff --git a/tests/Stdlib/Graph/NodeTest.php b/tests/Stdlib/Graph/NodeTest.php
index bdedd2034..040d9ffa9 100755
--- a/tests/Stdlib/Graph/NodeTest.php
+++ b/tests/Stdlib/Graph/NodeTest.php
@@ -135,7 +135,7 @@ final class NodeTest extends \PHPUnit\Framework\TestCase
 
         self::assertInstanceOf(Edge::class, $edge = $node1->setNodeRelative($node2, null, false));
         self::assertCount(1, $node2->getEdges());
-        self::assertFalse($edge->isDirected());
+        self::assertFalse($edge->isDirected);
     }
 
     /**
@@ -173,7 +173,7 @@ final class NodeTest extends \PHPUnit\Framework\TestCase
         $node1->setNodeRelative($node2);
         $node1->setNodeRelative($node3);
 
-        self::assertEquals('C', $node1->getEdgeByNeighbor($node3)->getNode2()->getId());
+        self::assertEquals('C', $node1->getEdgeByNeighbor($node3)->node2->getId());
         self::assertNull($node1->getEdgeByNeighbor($node4));
     }
 }