Add identifier quoting section into Schema API chapter

reference/en/schema-manager.txt

@@ -14,14 +14,16 @@ Now with the `SchemaManager` instance in `$em` you can use the available methods
 > You have to manually quote the identifiers when you accept data from user- or other sources not under
 > your control.
 
-++ listDatabases()
+++ Schema Description API
+
++++ listDatabases()
 
 Retrieve an array of databases on the configured connection:
 
     [php]
     $databases = $sm->listDatabases();
 
-++ listSequences($database = null)
++++ listSequences($database = null)
 
 Retrieve an array of `Doctrine\DBAL\Schema\Sequence` instances that exist for a database:
 
@@ -40,7 +42,7 @@ Now you can loop over the array inspecting each sequence object:
         echo $sequence->getName() . "\n";
     }
 
-++ listTableColumns($tableName)
++++ listTableColumns($tableName)
 
 Retrieve an array of `Doctrine\DBAL\Schema\Column` instances that exist for the given table:
 
@@ -54,7 +56,7 @@ Now you can loop over the array inspecting each column object:
         echo $column->getName() . ': ' . $column->getType() . "\n";
     }
 
-++ listTableDetails($tableName)
++++ listTableDetails($tableName)
 
 Retrieve a single `Doctrine\DBAL\Schema\Table` instance that encapsulates all the details of the given table:
 
@@ -66,7 +68,7 @@ Now you can call methods on the table to manipulate the in memory schema for tha
     [php]
     $table->addColumn('email_address', 'string');
 
-++ listTableForeignKeys($tableName)
++++ listTableForeignKeys($tableName)
 
 Retrieve an array of `Doctrine\DBAL\Schema\ForeignKeyConstraint` instances that exist for the given table:
 
@@ -80,7 +82,7 @@ Now you can loop over the array inspecting each foreign key object:
         echo $foreignKey->getName() . ': ' . $foreignKey->getLocalTableName() ."\n";
     }
 
-++ listTableIndexes($tableName)
++++ listTableIndexes($tableName)
 
 Retrieve an array of `Doctrine\DBAL\Schema\Index` instances that exist for the given table:
 
@@ -94,7 +96,7 @@ Now you can loop over the array inspecting each index object:
         echo $index->getName() . ': ' . ($index->isUnique() ? 'unique' : 'not unique') . "\n";
     }
 
-++ listTables()
++++ listTables()
 
 Retrieve an array of `Doctrine\DBAL\Schema\Table` instances that exist in the connections database:
 
@@ -112,7 +114,7 @@ Each `Doctrine\DBAl\Schema\Table` instance is populated with information provide
     }
 
 
-++ listViews()
++++ listViews()
 
 Retrieve an array of `Doctrine\DBAL\Schema\View` instances that exist in the connections database:
 
@@ -126,7 +128,7 @@ Now you can loop over the array inspecting each view object:
         echo $view->getName() . ': ' . $view->getSql() . "\n";
     }
 
-++ createSchema()
++++ createSchema()
 
 For a complete representation of the current database you can use the `createSchema()` method which returns an instance of `Doctrine\DBAL\Schema\Schema`, which you can use in conjunction with the SchemaTool or Schema Comparator.
 
@@ -153,4 +155,13 @@ The `$sql` array should give you a sql query to drop the user table:
     array(
       0 => 'DROP TABLE user'
     )
-    */
\ No newline at end of file
+    */
+
+++ Quoting Identifiers
+
+It is important to note that Doctrine DBAL does not automatically quote identifiers for you. You have to explicitly
+quote your identifiers using the ``` character. This character is detected and translated into the appropriate
+vendor specific identifier quotes by the Schema API of Doctrine 2. This explicit mechanism for quoting allows
+much more flexibility in the internals of the Schema API. This is necessary because automatic identifier quoting
+is not feasible across all the different vendors.
+