Add note about indentation of first line

README.md

@@ -502,7 +502,7 @@ Export the current value of each `use()` variable as expression inside the expor
 You can use the 3rd argument of `VarExporter::export()` to control the indentation level. 
 This is useful when you want to use the generated code string to replace a placeholder in a template used to generate code files.
 
-So using output of `VarExporter::export(['foo' => 'bar'], indentLevel: 1)` in the template below to replace `{{exported}}`
+So using output of `VarExporter::export(['foo' => 'bar'], indentLevel: 1)` in the template below to replace `{{exported}}`:
 
 ```
 public foo() 
@@ -511,7 +511,7 @@ public foo()
 }
 ```
 
-would result in
+would result in:
 
 ```php
 public foo() 
@@ -522,6 +522,8 @@ public foo()
 }
 ```
 
+Note that the first line will never be indented, as we can see in the example above.
+
 ## Error handling
 
 Any error occurring on `export()` will throw an `ExportException`: