Clarify distutils’ clean command (ref #6142)
diff --git a/Doc/distutils/apiref.rst b/Doc/distutils/apiref.rst
index d70d13f..9853f02 100644
--- a/Doc/distutils/apiref.rst
+++ b/Doc/distutils/apiref.rst
@@ -1934,8 +1934,12 @@
.. module:: distutils.command.clean
:synopsis: Clean a package build area
+This command removes the temporary files created by :command:`build`
+and its subcommands, like intermediary compiled object files. With
+the ``--all`` option, the complete build directory will be removed.
-.. % todo
+Extension modules built :ref:`in place <distutils-build-ext-inplace>`
+will not be cleaned, as they are not in the build directory.
:mod:`distutils.command.config` --- Perform package configuration
diff --git a/Doc/distutils/configfile.rst b/Doc/distutils/configfile.rst
index 890047c..ac79671 100644
--- a/Doc/distutils/configfile.rst
+++ b/Doc/distutils/configfile.rst
@@ -69,6 +69,8 @@
Note that an option spelled :option:`--foo-bar` on the command-line is spelled
:option:`foo_bar` in configuration files.
+.. _distutils-build-ext-inplace:
+
For example, say you want your extensions to be built "in-place"---that is, you
have an extension :mod:`pkg.ext`, and you want the compiled extension file
(:file:`ext.so` on Unix, say) to be put in the same source directory as your