Merge pull request #1189 from datalad-handbook/datalad-configuration

mention datalad-configuration command

docs/basics/101-122-config.rst

@@ -295,6 +295,21 @@ remaining sections in that file, and the :ref:`that dissects this config file fu
    Lastly, the ``annex-ignore = false`` configuration allows git-annex
    to query the remote when it tries to retrieve data from annexed content.
 
+.. index::
+   pair: configuration; DataLad command
+   pair: set configuration; with DataLad
+
+The ``datalad configuration`` command
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Although this section put a focus on the ``git config`` command, it is important to mention that there also is a :dlcmd:`configuration` command.
+It is not identical to ``git config``, but while it lacks some feature of ``git config``, such as the ability to set system-wide configuration, it has additional features.
+Beyond the ``local`` and ``global`` scopes, it also supports :term:`branch` specific configurations in the ``.datalad/config`` file (further discussed in the next section), setting configurations recursively through dataset hierarchies, and multi-configuration queries (such as ``datalad configuration get user.name user.email``).
+By default, ``datalad configuration`` will ``dump`` (list) the effective configuration including relevant ``DATALAD_*`` :term:`environment variable`\s, and also annotate the purpose of many common configuration items.
+The subcommands ``datalad configuration get`` or ``datalad configuration set`` perform queries or set configurations.
+You can find out more information on this command in the command documentation.
+
+
 ``.git/config`` versus other (configuration) files
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^