[Console] Add a section for global options

console.rst

@@ -28,13 +28,24 @@ the ``list`` command to view all available commands in the application:
       cache:clear                                Clear the cache
     ...
 
+.. note::
+
+    ``list`` is the default command, so running ``php bin/console`` is the same.
+
 If you find the command you need, you can run it with the ``--help`` option
 to view the command's documentation:
 
 .. code-block:: terminal
 
     $ php bin/console assets:install --help
 
+.. note::
+
+    ``--help`` is one of the built-in global options from the Console component,
+    which are available for all commands, including those you can create.
+    To learn more about them, you can read
+    :ref:`this section <console-global-options>`.
+
 APP_ENV & APP_DEBUG
 ~~~~~~~~~~~~~~~~~~~
 

console/input.rst

@@ -404,4 +404,26 @@ to help you unit test the completion logic::
         }
     }
 
+.. _console-global-options:
+
+Command Global Options
+----------------------
+
+The Console component adds some predefined options to all commands:
+
+* ``--verbose``: sets the verbosity level (e.g. ``1`` the default, ``2`` and
+  ``3``, or you can use respective shortcuts ``-v``, ``-vv`` and ``-vvv``)
+* ``--quiet``: disables output and interaction
+* ``--no-interaction``: disables interaction
+* ``--version``: outputs the version number of the console application
+* ``--help``: displays the command help
+* ``--ansi|--no-ansi``: whether to force of disable coloring the output
+
+When using the ``FrameworkBundle``, two more options are predefined:
+
+* ``--env``: sets the Kernel configuration environment (defaults to ``APP_ENV``)
+* ``--no-debug``: disables Kernel debug (defaults to ``APP_DEBUG``)
+
+So your custom commands can use them too out-of-the-box.
+
 .. _`docopt standard`: http://docopt.org/