diff --git a/src/oatpp/core/Types.hpp b/src/oatpp/core/Types.hpp
index 5d55c7b4..3736c5c5 100644
--- a/src/oatpp/core/Types.hpp
+++ b/src/oatpp/core/Types.hpp
@@ -31,42 +31,43 @@
 namespace oatpp {
 
   /**
-   * Mapping-Enabled String type
+   * Mapping-Enabled String type. &id:oatpp::data::mapping::type::String; <br>
+   * For `oatpp::String` methods see &id:oatpp::base::StrBuffer;
    */
   typedef oatpp::data::mapping::type::String String;
 
   /**
-   * Mapping-Enabled 8-bits int. Can hold nullptr value.
+   * Mapping-Enabled 8-bits int. Can hold nullptr value. &id:oatpp::data::mapping::type::Int8;
    */
   typedef oatpp::data::mapping::type::Int8 Int8;
 
   /**
-   * Mapping-Enabled 16-bits int. Can hold nullptr value.
+   * Mapping-Enabled 16-bits int. Can hold nullptr value. &id:oatpp::data::mapping::type::Int16;
    */
   typedef oatpp::data::mapping::type::Int16 Int16;
 
   /**
-   * Mapping-Enabled 32-bits int. Can hold nullptr value.
+   * Mapping-Enabled 32-bits int. Can hold nullptr value. &id:oatpp::data::mapping::type::Int32;
    */
   typedef oatpp::data::mapping::type::Int32 Int32;
 
   /**
-   * Mapping-Enabled 64-bits int. Can hold nullptr value.
+   * Mapping-Enabled 64-bits int. Can hold nullptr value. &id:oatpp::data::mapping::type::Int64;
    */
   typedef oatpp::data::mapping::type::Int64 Int64;
 
   /**
-   * Mapping-Enabled 32-bits float. Can hold nullptr value.
+   * Mapping-Enabled 32-bits float. Can hold nullptr value. &id:oatpp::data::mapping::type::Float32;
    */
   typedef oatpp::data::mapping::type::Float32 Float32;
 
   /**
-   * Mapping-Enabled 64-bits float (double). Can hold nullptr value.
+   * Mapping-Enabled 64-bits float (double). Can hold nullptr value. &id:oatpp::data::mapping::type::Float64;
    */
   typedef oatpp::data::mapping::type::Float64 Float64;
 
   /**
-   * Mapping-Enabled Boolean. Can hold nullptr value.
+   * Mapping-Enabled Boolean. Can hold nullptr value. &id:oatpp::data::mapping::type::Boolean;
    */
   typedef oatpp::data::mapping::type::Boolean Boolean;