[GitHub] [airflow] JeffryMAC commented on a change in pull request #10241: Create "Managing variable" in howto directory

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JeffryMAC commented on a change in pull request #10241:
URL: https://github.com/apache/airflow/pull/10241#discussion_r467501205



##########
File path: docs/howto/variable.rst
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@@ -0,0 +1,72 @@
+ .. Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements.  See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership.  The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License.  You may obtain a copy of the License at
+
+ ..   http://www.apache.org/licenses/LICENSE-2.0
+
+ .. Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied.  See the License for the
+    specific language governing permissions and limitations
+    under the License.
+
+Managing Connections
+====================
+
+Variables are a generic way to store and retrieve arbitrary content or
+settings as a simple key value store within Airflow. Variables can be
+listed, created, updated and deleted from the UI (``Admin -> Variables``),
+code or CLI.
+
+.. image:: ../img/variable_hidden.png
+
+See the :ref:`Variables Concepts <concepts-variables>` documentation for
+more information.
+
+Storing Variables in Environment Variables

Review comment:
       If I may add... there the previous paragraph explain what is Variable.
   This paragraph explain how to store variable as Environment Variables (This is a **How to** but not **What is**)
   It's not clear to me why to do that. What this functionality gives and when someone would need to use it. 




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