diff --git a/src/Asset/BaseMediaAsset.php b/src/Asset/BaseMediaAsset.php
index bdfebf80..854e8db7 100644
--- a/src/Asset/BaseMediaAsset.php
+++ b/src/Asset/BaseMediaAsset.php
@@ -101,7 +101,7 @@ public function setTransformation(CommonTransformation $transformation)
     abstract public function getTransformation();
 
     /**
-     * Adds (appends) a transformation.
+     * Adds (appends) a transformation in URL syntax to the current chain. A transformation is a set of instructions for adjusting images or videos—such as resizing, cropping, applying filters, adding overlays, or optimizing formats. For a detailed listing of all transformations, see the [Transformation Reference](https://cloudinary.com/documentation/transformation_reference) or the [PHP reference](https://cloudinary.com/documentation/sdks/php/php-transformation-builder/index.html).
      *
      * Appended transformation is nested.
      *
diff --git a/src/Asset/Descriptor/AssetTransformation.php b/src/Asset/Descriptor/AssetTransformation.php
index 2fb4f892..160ad9d2 100644
--- a/src/Asset/Descriptor/AssetTransformation.php
+++ b/src/Asset/Descriptor/AssetTransformation.php
@@ -157,7 +157,7 @@ public function importJson($json)
     }
 
     /**
-     * Adds (appends) a transformation.
+     * Adds (appends) a transformation in URL syntax to the current chain. A transformation is a set of instructions for adjusting images or videos—such as resizing, cropping, applying filters, adding overlays, or optimizing formats. For a detailed listing of all transformations, see the [Transformation Reference](https://cloudinary.com/documentation/transformation_reference) or the [PHP reference](https://cloudinary.com/documentation/sdks/php/php-transformation-builder/index.html).
      *
      * Appended transformation is nested.
      *
diff --git a/src/Tag/BaseImageTag.php b/src/Tag/BaseImageTag.php
index 93e06b89..8ee90c9e 100644
--- a/src/Tag/BaseImageTag.php
+++ b/src/Tag/BaseImageTag.php
@@ -174,7 +174,7 @@ public function jsonSerialize()
     }
 
     /**
-     * Adds (appends) a transformation.
+     * Adds (appends) a transformation in URL syntax to the current chain. A transformation is a set of instructions for adjusting images or videos—such as resizing, cropping, applying filters, adding overlays, or optimizing formats. For a detailed listing of all transformations, see the [Transformation Reference](https://cloudinary.com/documentation/transformation_reference) or the [PHP reference](https://cloudinary.com/documentation/sdks/php/php-transformation-builder/index.html).
      *
      * Appended transformation is nested.
      *
diff --git a/src/Tag/ImageTag.php b/src/Tag/ImageTag.php
index 0de89ff9..2b3c0f90 100644
--- a/src/Tag/ImageTag.php
+++ b/src/Tag/ImageTag.php
@@ -15,6 +15,8 @@
 /**
  * Generates an HTML `<img>` tag with the `src` attribute set to the transformation URL, optional `srcset` and other
  * specified attributes.
+ * 
+ * For more information, see the [PHP SDK guide](https://cloudinary.com/documentation/php_image_manipulation#deliver_and_transform_images).
  *
  * @api
  */
diff --git a/src/Tag/VideoTag.php b/src/Tag/VideoTag.php
index 38c9a08f..72378d01 100644
--- a/src/Tag/VideoTag.php
+++ b/src/Tag/VideoTag.php
@@ -343,7 +343,7 @@ public function jsonSerialize()
     }
 
     /**
-     * Adds (appends) a transformation.
+     * Adds (appends) a transformation in URL syntax to the current chain. A transformation is a set of instructions for adjusting images or videos—such as resizing, cropping, applying filters, adding overlays, or optimizing formats. For a detailed listing of all transformations, see the [Transformation Reference](https://cloudinary.com/documentation/transformation_reference) or the [PHP reference](https://cloudinary.com/documentation/sdks/php/php-transformation-builder/index.html).
      *
      * Appended transformation is nested.
      *