Wave some hands about the installation process

S22-package-format.pod

@@ -146,7 +146,8 @@ However, a request for:
 
   JSON::Fast:auth<github:JRANDOM>
 
-would not find anything, because it has the wrong content storage specification.
+would not find anything, because it has the wrong content storage specification
+("github" instead of "cpan").
 
 Please note that a recommendation manager does not need to be bound to a single
 content storage.  In fact, a recommendation manager would be best if being able
@@ -440,4 +441,12 @@ possibly in parallel.  Any files in this directory will never be installed.
 All files in this directory should contain executable Perl 6 code, to be
 executed at various stages of the install process of this distribution.
 
+=head2 Installation
+
+Distributions can be installed with an installer.  This may be a command-line
+script, or be some kind of GUI.  The installer needs the user to (implicitly)
+select the C<CompUnitRepo> in which the distribution should be installed, and
+the recommendation manager that should be used to convert requests for a
+compilation unit into an identity of a distribution to be downloaded.
+
 =for vim:set expandtab sw=4: