Merge pull request #164499 from mumian/0702-bicep-whitespace

add whitespace to the file structure article

Author: v-shils

articles/azure-resource-manager/bicep/file.md

@@ -2,7 +2,7 @@
 title: Bicep file structure and syntax
 description: Describes the structure and properties of a Bicep file using declarative syntax.
 ms.topic: conceptual
-ms.date: 06/01/2021
+ms.date: 07/02/2021
 ---
 
 # Understand the structure and syntax of Bicep files
@@ -293,6 +293,10 @@ An output can have the same name as a parameter, variable, module, or resource.
 
 For more information, see [Outputs in Bicep](./outputs.md).
 
+## Whitespace
+
+Spaces and tabs are ignored when authoring Bicep files. New lines however have semantic meaning, for example in [object](./data-types.md#objects) and [array](./data-types.md#arrays) declarations.
+
 ## Comments
 
 Use `//` for single-line comments or `/* ... */` for multi-line comments