diff --git a/samples/Sample_11_Shape.php b/samples/Sample_11_Shape.php
index 37dc5a221..35d1a4540 100644
--- a/samples/Sample_11_Shape.php
+++ b/samples/Sample_11_Shape.php
@@ -81,6 +81,25 @@ function fnSlideRichTextLineSpacing(PhpPresentation $objPHPPresentation)
     $shape->createTextRun('Line Spacing 300');
 }
 
+function fnSlideRichTextRotation(PhpPresentation $objPHPPresentation)
+{
+    // Create templated slide
+    echo date('H:i:s') . ' Create templated slide' . EOL;
+    $currentSlide = createTemplatedSlide($objPHPPresentation);
+
+    // Create a shape (text)
+    echo date('H:i:s') . ' Create a shape (rich text) with rotation' . EOL;
+    $shape = $currentSlide->createRichTextShape();
+    $shape->setHeight(100);
+    $shape->setWidth(400);
+    $shape->setOffsetX(100);
+    $shape->setOffsetY(100);
+    $shape->getActiveParagraph()->getAlignment()->setHorizontal(Alignment::HORIZONTAL_LEFT);
+    $shape->setRotation(45);
+
+    $shape->createTextRun('RichText with rotation');
+}
+
 function fnSlideRichTextShadow(PhpPresentation $objPHPPresentation)
 {
     // Create templated slide
@@ -143,6 +162,7 @@ function fnSlideRichTextList(PhpPresentation $objPHPPresentation)
 
 fnSlideRichText($objPHPPresentation);
 fnSlideRichTextLineSpacing($objPHPPresentation);
+fnSlideRichTextRotation($objPHPPresentation);
 fnSlideRichTextShadow($objPHPPresentation);
 fnSlideRichTextList($objPHPPresentation);
 
diff --git a/samples/Sample_Header.php b/samples/Sample_Header.php
index 40356df18..362dd11c6 100644
--- a/samples/Sample_Header.php
+++ b/samples/Sample_Header.php
@@ -87,13 +87,21 @@
         if (preg_match('/^Sample_\d+_/', $file)) {
             $name = str_replace('_', ' ', preg_replace('/(Sample_|\.php)/', '', $file));
             $group = substr($name, 0, 1);
+            $id = substr($name, 0, 2);
             if (!isset($files[$group])) {
-                $files[$group] = '';
+                $files[$group] = array();
             }
-            $files[$group] .= "<li><a href='{$file}'>{$name}</a></li>";
+            if (!isset($files[$group][$id])) {
+                $files[$group][$id] = '';
+            }
+            $files[$group][$id] .= "<li><a href='{$file}'>{$name}</a></li>";
+            ksort($files[$group]);
         }
     }
     closedir($handle);
+    foreach ($files as $keyGroup => $arrayGroup) {
+        $files[$keyGroup] = implode('', $arrayGroup);
+    }
 }
 
 /**
diff --git a/src/PhpPresentation/Writer/ODPresentation/Content.php b/src/PhpPresentation/Writer/ODPresentation/Content.php
index 38e6e1a76..9433e4256 100644
--- a/src/PhpPresentation/Writer/ODPresentation/Content.php
+++ b/src/PhpPresentation/Writer/ODPresentation/Content.php
@@ -454,6 +454,10 @@ public function writeShapeTxt(XMLWriter $objWriter, RichText $shape): void
         $objWriter->writeAttribute('svg:height', Text::numberFormat(CommonDrawing::pixelsToCentimeters($shape->getHeight()), 3) . 'cm');
         $objWriter->writeAttribute('svg:x', Text::numberFormat(CommonDrawing::pixelsToCentimeters($shape->getOffsetX()), 3) . 'cm');
         $objWriter->writeAttribute('svg:y', Text::numberFormat(CommonDrawing::pixelsToCentimeters($shape->getOffsetY()), 3) . 'cm');
+        if ($shape->getRotation() != 0) {
+            $rotRad = deg2rad($shape->getRotation());
+            $objWriter->writeAttribute('draw:transform', 'rotate ('.$rotRad.')');
+        }
         // draw:text-box
         $objWriter->startElement('draw:text-box');
 
diff --git a/tests/PhpPresentation/Tests/Writer/ODPresentation/ContentTest.php b/tests/PhpPresentation/Tests/Writer/ODPresentation/ContentTest.php
index 198b16f5c..636c41048 100644
--- a/tests/PhpPresentation/Tests/Writer/ODPresentation/ContentTest.php
+++ b/tests/PhpPresentation/Tests/Writer/ODPresentation/ContentTest.php
@@ -418,6 +418,18 @@ public function testRichTextBorder(): void
         $this->assertIsSchemaOpenDocumentValid('1.2');
     }
 
+    public function testRichTextRotation(): void
+    {
+        $expectedValue = rand(1, 360);
+        $oRichText1 = $this->oPresentation->getActiveSlide()->createRichTextShape();
+        $oRichText1->setRotation($expectedValue);
+
+        $element = '/office:document-content/office:body/office:presentation/draw:page/draw:frame';
+        $this->assertZipXmlElementExists('content.xml', $element);
+        $this->assertZipXmlAttributeExists('content.xml', $element, 'draw:transform');
+        $this->assertZipXmlAttributeEquals('content.xml', $element, 'draw:transform', 'rotate ('.deg2rad(360 - $expectedValue).')');
+    }
+    
     public function testRichTextShadow(): void
     {
         $randAlpha = mt_rand(0, 100);